1143680 has 32 divisors (see below), whose sum is σ = 2735640. Its totient is φ = 457216.

The previous prime is 1143679. The next prime is 1143697. The reversal of 1143680 is 863411.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254 + ... + 1533.

2^1143680 is an apocalyptic number.

1143680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143680 is an abundant number, since it is smaller than the sum of its proper divisors (1591960).

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

1143680 is an equidigital number, since it uses as much as digits as its factorization.

1143680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806 (or 1794 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1143680 is about 1069.4297545889. The cubic root of 1143680 is about 104.5766780772.

The spelling of 1143680 in words is "one million, one hundred forty-three thousand, six hundred eighty".