56720784 has 40 divisors (see below), whose sum is σ = 149941792. Its totient is φ = 18466560.

The previous prime is 56720779. The next prime is 56720813. The reversal of 56720784 is 48702765.

56720784 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11677 + ... + 15804.

Almost surely, 2^56720784 is an apocalyptic number.

It is an amenable number.

56720784 is an abundant number, since it is smaller than the sum of its proper divisors (93221008).

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

56720784 is a wasteful number, since it uses less digits than its factorization.

56720784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27535 (or 27529 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 56720784 is about 7531.3202029923. The cubic root of 56720784 is about 384.2206847801.

The spelling of 56720784 in words is "fifty-six million, seven hundred twenty thousand, seven hundred eighty-four".