264 (number)

264 (two hundred [and] sixty-four) is the natural number following 263 and preceding 265.

← 263 264 265 →
← 260 261 262 263 264 265 266 267 268 269 → List of numbers Integers ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	two hundred sixty-four
Ordinal	264th (two hundred sixty-fourth)
Factorization	23 × 3 × 11
Divisors	1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 33, 44, 66, 88, 132, 264
Greek numeral	ΣΞΔ´
Roman numeral	CCLXIV, cclxiv
Binary	1000010002
Ternary	1002103
Senary	11206
Octal	4108
Duodecimal	1A012
Hexadecimal	10816

In mathematics

264 is an even composite number^[1] with three distinct prime factors (2³ × 3 × 11).^[2] 264 is a Harshad number in base ten,^[3] also divisible by each of its digits.

264 is the sum of all even composite numbers that are not the sum of two abundant numbers (not necessarily distinct): 4 + 6 + 8 + 10 + 12 + 14 + 16 + 18 + 20 + 22 + 26 + 28 + 34 + 46.^[4] The only other even number that is not the sum of two abundant numbers is the only even prime number, 2.