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  1. //  Check if a number is a perfect number
  2.  
  3. public class Main{
  4. public static void main(String[] args){
  5. int num = 28;
  6. int sum =0;
  7.  
  8. for(int i =1;i<=num;i++){
  9. if(num %i == 0){
  10. sum += i;
  11. }
  12. }
  13.  
  14. if(sum == num){
  15. System.out.println(num + "perfect num");
  16. }
  17. else{
  18. System.out.println(num + "perfect num");
  19. }
  20. }
  21. }
Success #stdin #stdout 0.12s 55412KB
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Standard input is empty
stdout
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28perfect num
https://ideone.com/2LbV8p
language:
Java (HotSpot 12)
created:
1 day ago
visibility:
public

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