The number 22

Representation numerals

Greek numeral

κβʹ

Arabic numeral

٢٢

Roman numeral

XXII

Maya numeral

●
●●

Chinese numeral

二十二

Hebrew numeral

כב
Numeral systems
Binary: 10110
Septimal (base 7): 31
Octal: 26
Hexadecimal: 16
Base 24: M
Factorization
22 = 2 × 11
22 has 4 divisors: 1, 2, 11, 22
Sum of all divisors other than 22: 14
Sums & differences
Goldbach conjecture: 22 = 19 + 3 = 17 + 5 = 11 + 11
Characteristics
22 is a pentagonal number
22 is a palindromic number in decimal system
Related primes
The 22th prime number is: 79
Previous prime number: 19 — Next prime number: 23

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