57568720 has 40 divisors (see below), whose sum is σ = 146017440. Its totient is φ = 20933760.

The previous prime is 57568711. The next prime is 57568729. The reversal of 57568720 is 2786575.

It is an interprime number because it is at equal distance from previous prime (57568711) and next prime (57568729).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57568729) 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, 31830 + ... + 33589.

It is an arithmetic number, because the mean of its divisors is an integer number (3650436).

Almost surely, 2^57568720 is an apocalyptic number.

It is an amenable number.

57568720 is an abundant number, since it is smaller than the sum of its proper divisors (88448720).

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

57568720 is a wasteful number, since it uses less digits than its factorization.

57568720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65443 (or 65437 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 57568720 is about 7587.4053536107. The cubic root of 57568720 is about 386.1258326005.

The spelling of 57568720 in words is "fifty-seven million, five hundred sixty-eight thousand, seven hundred twenty".