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Special Number Program in Java

A number is said to be special number when the sum of factorial of its digits is equal to the number itself. Example- 145 is a Special Number as 1!+4!+5!=145.

Reverse Number Program in Java

If a number=1234, then reverse of number is 4321.

Prime Number Program in Java

A prime number is a natural number greater than 1 that cannot be formed by multiplying two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number. For example, 5 is prime because the only ways of writing it as a product, 1 × 5 or 5 × 1, involve 5 itself.

Perfect Number Program in Java

A perfect number is a positive integer that is equal to the sum of its positive divisors, excluding the number itself. For instance, 6 has divisors 1, 2 and 3, and 1 + 2 + 3 = 6, so 6 is a perfect number.

Palindrome Number Program in Java

A palindromic number is a number that remains the same when its digits are reversed. Like 16461, for example,

Niven Number Program in Java

In mathematics, a Niven number (or harshad number) in a given number base is an integer that is divisible by the sum of its digits when written in that base.

Neon Number Program in Java

A neon number is a number where the sum of digits of square of the number is equal to the number. For example if the input number is 9, its square is 9*9 = 81 and sum of the digits is 9. i.e. 9 is a neon number.

Multiply Of Digit Program in Java

If a number=1234, then 1*2*3*4 ,Multiply of digit=24, Multiply Of Digit Program in Java

Least Common Multiple Program in Java

The least common multiple, lowest common multiple, or smallest common multiple of two integers a and b, usually denoted by LCM(a, b), is the smallest positive integer that is divisible by both a and b.

Harshad Number Program in Java

In mathematics, a harshad number (or Niven number) in a given number base is an integer that is divisible by the sum of its digits when written in that base.

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