56043240 has 64 divisors (see below), whose sum is σ = 183418560. Its totient is φ = 13585920.

The previous prime is 56043209. The next prime is 56043259. The reversal of 56043240 is 4234065.

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 56043240.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19909 + ... + 22548.

It is an arithmetic number, because the mean of its divisors is an integer number (2865915).

Almost surely, 2^56043240 is an apocalyptic number.

It is an amenable number.

56043240 is an abundant number, since it is smaller than the sum of its proper divisors (127375320).

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

56043240 is a wasteful number, since it uses less digits than its factorization.

56043240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42482 (or 42478 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 56043240 is about 7486.2033100898. The cubic root of 56043240 is about 382.6846816309.

The spelling of 56043240 in words is "fifty-six million, forty-three thousand, two hundred forty".