The number 228

Representation numerals

Greek numeral

σκηʹ

Arabic numeral

٢٢٨

Roman numeral

CCXXVIII

Maya numeral


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Chinese numeral

二百二十八

Hebrew numeral

רכח
Numeral systems
Binary: 11100100
Septimal (base 7): 444
Octal: 344
Hexadecimal: e4
Base 24: 9C
Factorization
228 = 2 × 2 × 3 × 19
228 has 12 divisors: 1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 114, 228
Sum of all divisors other than 228: 332
Sums & differences
Difference of 2 squares: 228 = 222 - 162 = 582 - 562
Goldbach conjecture: 228 = 223 + 5 = 211 + 17 = 199 + 29 = 197 + 31 = 191 + 37 = 181 + 47 = 167 + 61 = 157 + 71 = 149 + 79 = 139 + 89 = . . . (only the first 10 pairs are shown)
Characteristics
228 is a palindromic number in septimal system (444)
Related primes
The 228th prime number is: 1439
Previous prime number: 227 — Next prime number: 229
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