1143980 has 24 divisors (see below), whose sum is σ = 2455488. Its totient is φ = 447488.

The previous prime is 1143977. The next prime is 1144001. The reversal of 1143980 is 893411.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332 + ... + 1548.

It is an arithmetic number, because the mean of its divisors is an integer number (102312).

2^1143980 is an apocalyptic number.

1143980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143980 is an abundant number, since it is smaller than the sum of its proper divisors (1311508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1143980 is a wasteful number, since it uses less digits than its factorization.

1143980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273 (or 1271 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1143980 is about 1069.5700070589. The cubic root of 1143980 is about 104.5858211535.

The spelling of 1143980 in words is "one million, one hundred forty-three thousand, nine hundred eighty".