56904720 has 80 divisors (see below), whose sum is σ = 180738432. Its totient is φ = 14801920.

The previous prime is 56904709. The next prime is 56904751. The reversal of 56904720 is 2740965.

It is a tau number, because it is divible by the number of its divisors (80).

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, 6949 + ... + 12731.

Almost surely, 2^56904720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56904720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90369216).

56904720 is an abundant number, since it is smaller than the sum of its proper divisors (123833712).

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

56904720 is a wasteful number, since it uses less digits than its factorization.

56904720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5840 (or 5834 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 56904720 is about 7543.5217239695. The cubic root of 56904720 is about 384.6355577522.

The spelling of 56904720 in words is "fifty-six million, nine hundred four thousand, seven hundred twenty".