57728130 has 32 divisors (see below), whose sum is σ = 141165504. Its totient is φ = 15103296.

The previous prime is 57728119. The next prime is 57728147. The reversal of 57728130 is 3182775.

It is a junction number, because it is equal to n+sod(n) for n = 57728091 and 57728100.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16564 + ... + 19743.

It is an arithmetic number, because the mean of its divisors is an integer number (4411422).

Almost surely, 2^57728130 is an apocalyptic number.

57728130 is an abundant number, since it is smaller than the sum of its proper divisors (83437374).

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

57728130 is a wasteful number, since it uses less digits than its factorization.

57728130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36370.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 57728130 is about 7597.9030001705. The cubic root of 57728130 is about 386.4819032388.

The spelling of 57728130 in words is "fifty-seven million, seven hundred twenty-eight thousand, one hundred thirty".