57428880 has 40 divisors (see below), whose sum is σ = 178030272. Its totient is φ = 15314304.

The previous prime is 57428869. The next prime is 57428897. The reversal of 57428880 is 8882475.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119404 + ... + 119883.

Almost surely, 2^57428880 is an apocalyptic number.

It is an amenable number.

57428880 is an abundant number, since it is smaller than the sum of its proper divisors (120601392).

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

57428880 is a wasteful number, since it uses less digits than its factorization.

57428880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239303 (or 239297 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 42.

The square root of 57428880 is about 7578.1844791480. The cubic root of 57428880 is about 385.8129334201.

The spelling of 57428880 in words is "fifty-seven million, four hundred twenty-eight thousand, eight hundred eighty".