23087040 has 56 divisors (see below), whose sum is σ = 73304400. Its totient is φ = 6156288.

The previous prime is 23087017. The next prime is 23087083. The reversal of 23087040 is 4078032.

It is a super-2 number, since 2×23087040² = 1066022831923200, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 23087040.

It is a congruent number.

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, 11065 + ... + 12984.

Almost surely, 2^23087040 is an apocalyptic number.

23087040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23087040 is an abundant number, since it is smaller than the sum of its proper divisors (50217360).

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

23087040 is a wasteful number, since it uses less digits than its factorization.

23087040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24069 (or 24059 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 23087040 is about 4804.8975015082. The cubic root of 23087040 is about 284.7449857967.

The spelling of 23087040 in words is "twenty-three million, eighty-seven thousand, forty".