57728760 has 32 divisors (see below), whose sum is σ = 173186640. Its totient is φ = 15394304.

The previous prime is 57728729. The next prime is 57728761. The reversal of 57728760 is 6782775.

It is a super-2 number, since 2×57728760² = 6665219462275200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57728761) 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, 240417 + ... + 240656.

Almost surely, 2^57728760 is an apocalyptic number.

It is an amenable number.

57728760 is an abundant number, since it is smaller than the sum of its proper divisors (115457880).

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

57728760 is a wasteful number, since it uses less digits than its factorization.

57728760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481087 (or 481083 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 42.

The square root of 57728760 is about 7597.9444588652. The cubic root of 57728760 is about 386.4833091548.

The spelling of 57728760 in words is "fifty-seven million, seven hundred twenty-eight thousand, seven hundred sixty".