PHP Program to Check Perfect Number

You are Here:

What is Perfect Number?

A positive integer that is equal to the sum of its proper divisors.

For example, 6 is a perfect number
6 = 1 + 2 + 3
6 = 6

Tips: It is recommended to use our online Perfect Number calculator for better understanding.

Check Perfect Number

In the following example, we will check whether the given number (496) is a Perfect number or not.

Example

PHP Compiler
<?php $num = 496; $i = 1; $total = 0; for($i=1; $i<$num; $i++) { if($num % $i == 0) $total += $i; } if($total == $num) echo "$num is a perfect number"; else echo "$num is not a perfect number"; ?>

Perfect Numbers between the Given Range

In the following example, we will find all the Perfect numbers between 1 and 1000.

Example

PHP Compiler
<?php $start = 1; $end = 1000; $flag = 0; $total = 0; echo "Perfect numbers between $start and $end: <br>"; for($start=$start; $start<=$end; $start++) { for($i=1; $i<$start; $i++) { if($start % $i == 0) $total += $i; } if(($total == $start) && ($start != 0)) { $flag = 1; echo "$start "; } $total = 0; } if($flag == 0) echo "There in no perfect number between the given range"; ?>

Reminder

Hi Developers, we almost covered 90% of String functions and Interview Question on PHP with examples for quick and easy learning.

We are working to cover every Single Concept in PHP.

Please do google search for:

Join Our Channel

Join our telegram channel to get an instant update on depreciation and new features on HTML, CSS, JavaScript, jQuery, Node.js, PHP and Python.

This channel is primarily useful for Full Stack Web Developer.

Share this Page

Meet the Author