The number 189

Representation numerals

Greek numeral

ρπθʹ

Arabic numeral

١٨٩

Roman numeral

CLXXXIX

Maya numeral

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Chinese numeral

一百八十九

Hebrew numeral

קפט
Numeral systems
Binary: 10111101
Septimal (base 7): 360
Octal: 275
Hexadecimal: bd
Base 24: 7L
Factorization
189 = 3 × 3 × 3 × 7
189 has 8 divisors: 1, 3, 7, 9, 21, 27, 63, 189
Sum of all divisors other than 189: 131
Sums & differences
Difference of 2 squares: 189 = 152 - 62 = 172 - 102 = 332 - 302 = 952 - 942
Characteristics
189 is a heptagonal number
189 is a palindromic number in binary system (10111101)
Related primes
The 189th prime number is: 1129
Previous prime number: 181 — Next prime number: 191
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