1140864 has 32 divisors (see below), whose sum is σ = 3031440. Its totient is φ = 380160.

The previous prime is 1140863. The next prime is 1140871. The reversal of 1140864 is 4680411.

1140864 = T₃₄₇ + T₃₄₈ + ... + T₃₆₄.

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

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1140863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1102 + ... + 1869.

2^1140864 is an apocalyptic number.

It is an amenable number.

1140864 is an abundant number, since it is smaller than the sum of its proper divisors (1890576).

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

1140864 is an equidigital number, since it uses as much as digits as its factorization.

1140864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2988 (or 2976 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 1140864 is about 1068.1123536408. The cubic root of 1140864 is about 104.4907770223.

The spelling of 1140864 in words is "one million, one hundred forty thousand, eight hundred sixty-four".