57050728 has 16 divisors (see below), whose sum is σ = 122251680. Its totient is φ = 24450288.

The previous prime is 57050717. The next prime is 57050761. The reversal of 57050728 is 82705075.

It is a junction number, because it is equal to n+sod(n) for n = 57050693 and 57050702.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509326 + ... + 509437.

It is an arithmetic number, because the mean of its divisors is an integer number (7640730).

Almost surely, 2^57050728 is an apocalyptic number.

It is an amenable number.

57050728 is an abundant number, since it is smaller than the sum of its proper divisors (65200952).

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

57050728 is a wasteful number, since it uses less digits than its factorization.

57050728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018776 (or 1018772 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 57050728 is about 7553.1932320046. The cubic root of 57050728 is about 384.9642469751.

The spelling of 57050728 in words is "fifty-seven million, fifty thousand, seven hundred twenty-eight".