276
276 is a natural number that follows 275 and precedes 277. In mathematics, it is an even composite number with prime factorization 276 = 2^2 × 3 × 23. It has 12 positive divisors, and the sum of all its divisors is 672, making 276 an abundant number since the sum of its proper divisors (672 − 276 = 396) exceeds 276. It is also a triangular number, equal to T_23 = 23 × 24 / 2 = 276, or 1 + 2 + ... + 23.
In numeral systems, 276 is written in Roman numerals as CCLXXVI; in binary as 100010100_2 and in
It is divisible by 2, 3, 4, 6, and 12, but not by 5 or 7. As
Historically, the year 276 AD fell within the Crisis of the Third Century in the Roman Empire;