- How can I find my Harshad number?
- What is vampire number in Java?
- What is sunny number in Java?
- What is perfect number in Java with example?
- What is happy number in Java?
- What is Nelson number in Java?
- How do you find Automorphic numbers?
- What is strong number?
- What is fascinating number in Java?
- What is Disarium number?
- What is a sad number?
- Is 13 a Fibonacci number?
- What is Smith number in Java?
- IS 496 a perfect number?
- What is Krishnamurthy number?
- What is the weirdest number?
- Is 25 a happy number?
- How do you find the perfect number?

## How can I find my Harshad number?

A number is said to be the Harshad number if it is divisible by the sum of its digit.

For example, if number is 156, then sum of its digit will be 1 + 5 + 6 = 12.

Since 156 is divisible by 12.

So, 156 is a Harshad number..

## What is vampire number in Java?

In number theory, a vampire number (or true vampire number) is a composite natural number with an even number of digits, that can be factored into two natural numbers each with half as many digits as the original number and not both with trailing zeroes, where the two factors contain precisely all the digits of the …

## What is sunny number in Java?

A number N is called sunny number if the square root of the number N+1 is an integer number. Example:- 24 is a sunny number because 24+1 = 25 has a square root of 5 which is an integer.

## What is perfect number in Java with example?

Any number can be a Java Perfect Number if the sum of its positive divisors excluding the number itself is equal to that number. For example, 28 is a perfect number because 28 is divisible by 1, 2, 4, 7, 14 and 28 and the sum of these values is 1 + 2 + 4 + 7 + 14 = 28. Remember, we have to exclude the number itself.

## What is happy number in Java?

Introduction to Happy Numbers in Java. Happy Number are positive non-zero integer numbers. If we find the sum of the squares of its every digit and repeat that process until the number will be equals to 1(one). Otherwise, it is called Unhappy Number or Sad Number.

## What is Nelson number in Java?

Answer. A nelson number is a number with multiples of 111.

## How do you find Automorphic numbers?

In mathematics, an automorphic number is a number whose square “ends” in the same digits as the number itself. For example, 52 = 25, 62 = 36, 762 = 5776, and 8906252 = 793212890625, so 5, 6, 76 and 890625 are all automorphic numbers.

## What is strong number?

Strong number is a number whose sum of all digits’ factorial is equal to the number ‘n’. Factorial implies when we find the product of all the numbers below that number including that number and is denoted by ! (Exclamation sign), For example: 4! = 4x3x2x1 = 24.

## What is fascinating number in Java?

A fascinating number is one which when multiplied by 2 and 3, and then, after the results are concatenated with the original number, the new number contains all the digits from 1 to 9 exactly once. For example, consider the number 192.

## What is Disarium number?

A number is called Disarium if sum of its digits powered with their respective positions is equal to the number itself.

## What is a sad number?

An unhappy number is a number that is not happy, i.e., a number such that iterating this sum-of-squared-digits map starting with. never reaches the number 1. The first few unhappy numbers are 2, 3, 4, 5, 6, 8, 9, 11, 12, 14, 15, 16, 17, 18, 20, … (OEIS A031177).

## Is 13 a Fibonacci number?

The Fibonacci Sequence is the series of numbers: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, …

## What is Smith number in Java?

Question: A Smith number is a composite number, the sum of whose digits is the sum of the digits of its prime factors obtained as a result of prime factorization (excluding 1). The first few such numbers are 4, 22, 27, 58, 85, 94, 121…

## IS 496 a perfect number?

496 is most notable for being a perfect number, and one of the earliest numbers to be recognized as such. As a perfect number, it is tied to the Mersenne prime 31, 25 − 1, with 24 (25 − 1) yielding 496.

## What is Krishnamurthy number?

A Krishnamurthy number is a number whose sum of the factorial of digits is equal to the number itself. Given a number N as input. Write a program to check whether this number is krishnamurthy number or not.

## What is the weirdest number?

Examples. The smallest weird number is 70. Its proper divisors are 1, 2, 5, 7, 10, 14, and 35; these sum to 74, but no subset of these sums to 70. The number 12, for example, is abundant but not weird, because the proper divisors of 12 are 1, 2, 3, 4, and 6, which sum to 16; but 2 + 4 + 6 = 12.

## Is 25 a happy number?

Numbers are called ‘happy’ when their sequences, sooner or later, give repeated 1’s. … The number 25 is sad because, however long we go on with the sequence, it will never come to 1, it will just keep repeating the terms (89, 145, 42, 20, 4, 16, 37, 58) over and over again. We call this an 8-cycle or loop.

## How do you find the perfect number?

A number is perfect if the sum of its proper factors is equal to the number. To find the proper factors of a number, write down all numbers that divide the number with the exception of the number itself. If the sum of the factors is equal to 18, then 18 is a perfect number.