Very Special Numbers

  What are Strong Numbers?   Strong number is a special number such that sum of the factorial of its digits is equal to the original number.   Strong Numbers are also known as Peterson Numbers.   Examples of Strong Number     Let us understand Strong Number with an example.   145 is a … Read more

 What is an Abundant Number? An Abundant Number is a positive integer for which the sum of all its Proper divisors (factors) is more than the original number.   Abundant number is  also called Excessive Numbers.     Examples of Abundant Numbers Let us understand Abundant Number with a few examples.     Example 1.  … Read more