Perfect Number: A Perfect number is a positive integer that is equal to the sum of its proper divisors excluding the number itself. For Example: Take Number 6. Its divisors are 1, 2 , 3 and 6. When we add all divisors except 6 ( as it is number itself) (i.e. 1+2+3= 6), it is equal to actual … Continue reading Frequently Asked Java Program 28: Java Program to Find if Given Number Is a Perfect Number