1180

1180 is a natural number that follows 1179 and precedes 1181. It is even and composite, with prime factorization 1180 = 2^2 × 5 × 59.

The positive divisors of 1180 are 1, 2, 4, 5, 10, 20, 59, 118, 236, 295, 590, and 1180, for a total of 12 divisors. The sum of its proper divisors is 1340, which makes 1180 an abundant number; the sum of all divisors is 2520. In various numeral systems, 1180 is written as 10010011100 in binary, 0x49C in hexadecimal, and 824 in base-12.

In Roman numerals it is MCLXXX. The base-10 digits sum to 10, so 1180 is a Harshad (Niven) number, since 1180 is divisible by 10. Consequently, modulo 9 it satisfies 1180 ≡ 1 (mod 9).