The Natural Number 22

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Properties of the Number 22

• Because 22 is divisible by 2 ...
• 22 is an even number
• 22 has parity 0
• 22 is not an odd number

• Because 22 can be factored as 2 x 11 ...
• 22 is a composite number
• 22 is not a prime number

Alternative Representations of the Number 22

• Base 2 (binary): 10110
• Base 8 (octal): 26
• Base 16 (hexadecimal): 16

• Roman numeral: XXII

• Words: twenty-two

Divisors of the Number 22

• 22 has 4 positive divisors: 1, 2, 11, 22
• The sum of the positive divisors is 36
• 22 has 3 proper divisors: 1, 2, 11
• The sum of the proper divisors is 14

• 22 is a deficient number since the sum of the proper divisors is less than 22
• 22 is not a perfect number
• 22 is not an abundant number

More Properties of the Number 22

• 22 is not a square number
• 22 is not a cube number

• 22 is a palindromic number (i.e., the digits are the same forwards and backwards)

• 22 is not a Fibonacci number
• 22 is not a Lucas number