The number 285

Representation numerals

Greek numeral

σπεʹ

Arabic numeral

٢٨٥

Roman numeral

CCLXXXV

Maya numeral

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Chinese numeral

二百八十五

Hebrew numeral

רפה
Numeral systems
Binary: 100011101
Septimal (base 7): 555
Octal: 435
Hexadecimal: 11d
Base 24: BL
Factorization
285 = 3 × 5 × 19
285 has 8 divisors: 1, 3, 5, 15, 19, 57, 95, 285
Sum of all divisors other than 285: 195
Sums & differences
Difference of 2 squares: 285 = 172 - 22 = 312 - 262 = 492 - 462 = 1432 - 1422
Characteristics
285 is a palindromic number in septimal system (555)
Related primes
The 285th prime number is: 1867
Previous prime number: 283 — Next prime number: 293
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