Perfect Number Checker API: Identify Perfect, Abundant, and Deficient Numbers

Perfect numbers have fascinated mathematicians since ancient Greece. The Perfect Number Checker API determines if a number is perfect (proper divisors sum to itself), abundant, or deficient, with detailed divisor analysis.

What are Perfect Numbers?

A perfect number equals the sum of its proper divisors (all divisors except itself). The ancient Greeks considered these numbers special and connected them to harmony and completeness.

Example: 6 is perfect because 1 + 2 + 3 = 6. The proper divisors of 6 are 1, 2, and 3.

The known perfect numbers are: 6, 28, 496, 8128, 33550336... They are extremely rare!

Number Classifications

Using the Perfect Number Checker API

TinyFn provides a comprehensive endpoint for number classification:

GET https://api.tinyfn.io/v1/math/perfect-number?number=28
Headers: X-API-Key: your-api-key

{
  "number": 28,
  "classification": "perfect",
  "is_perfect": true,
  "is_abundant": false,
  "is_deficient": false,
  "proper_divisors": [1, 2, 4, 7, 14],
  "proper_divisors_sum": 28,
  "abundance": 0
}

Parameters

Code Examples

JavaScript / Node.js

const response = await fetch(
  'https://api.tinyfn.io/v1/math/perfect-number?number=496',
  { headers: { 'X-API-Key': 'your-api-key' } }
);
const data = await response.json();
if (data.is_perfect) {
  console.log(`${data.number} is a perfect number!`);
  console.log(`Divisors: ${data.proper_divisors.join(' + ')} = ${data.proper_divisors_sum}`);
}

Python

import requests

# Check multiple numbers
for n in [6, 12, 28, 100]:
    response = requests.get(
        'https://api.tinyfn.io/v1/math/perfect-number',
        headers={'X-API-Key': 'your-api-key'},
        params={'number': n}
    )
    data = response.json()
    print(f"{n}: {data['classification']}")

cURL

curl "https://api.tinyfn.io/v1/math/perfect-number?number=8128" \
  -H "X-API-Key: your-api-key"

Common Use Cases

• Educational Tools: Teach number theory concepts
• Math Puzzles: Programming challenges like Project Euler
• Number Classification: Categorize numbers in datasets
• Research Tools: Study number properties and patterns
• Mathematical Art: Generate number sequences for visualizations

Best Practices

1. Know the rarity: Perfect numbers are extremely rare - don't expect to find many
2. Use abundance value: Positive = abundant, negative = deficient, zero = perfect
3. Cache known perfects: Only a few perfect numbers fit in standard integer types
4. Handle large numbers: Divisor calculation can be intensive for large inputs
5. Explore patterns: All even perfect numbers have the form 2^(p-1)(2^p-1) where 2^p-1 is prime