56720288 has 24 divisors (see below), whose sum is σ = 115520580. Its totient is φ = 27381760.

The previous prime is 56720269. The next prime is 56720303. The reversal of 56720288 is 88202765.

56720288 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 51093904 + 5626384 = 7148^2 + 2372^2 .

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 3 ways as a sum of consecutive naturals, for example, 29633 + ... + 31488.

Almost surely, 2^56720288 is an apocalyptic number.

56720288 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

56720288 is an abundant number, since it is smaller than the sum of its proper divisors (58800292).

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

56720288 is a wasteful number, since it uses less digits than its factorization.

56720288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61160 (or 61152 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 56720288 is about 7531.2872737667. The cubic root of 56720288 is about 384.2195648261.

The spelling of 56720288 in words is "fifty-six million, seven hundred twenty thousand, two hundred eighty-eight".