56720304 has 40 divisors (see below), whose sum is σ = 162809520. Its totient is φ = 18906624.

The previous prime is 56720303. The next prime is 56720309. The reversal of 56720304 is 40302765.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (56720303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65217 + ... + 66080.

It is an arithmetic number, because the mean of its divisors is an integer number (4070238).

Almost surely, 2^56720304 is an apocalyptic number.

56720304 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

56720304 is an abundant number, since it is smaller than the sum of its proper divisors (106089216).

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

56720304 is a wasteful number, since it uses less digits than its factorization.

56720304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131314 (or 131302 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 56720304 is about 7531.2883360020. The cubic root of 56720304 is about 384.2196009537.

The spelling of 56720304 in words is "fifty-six million, seven hundred twenty thousand, three hundred four".