57028 has 12 divisors (see below), whose sum is σ = 102060. Its totient is φ = 27872.

The previous prime is 56999. The next prime is 57037. The reversal of 57028 is 82075.

It can be written as a sum of positive squares in 2 ways, for example, as 20164 + 36864 = 142^2 + 192^2 .

It is an unprimeable number.

57028 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78 + ... + 346.

It is an arithmetic number, because the mean of its divisors is an integer number (8505).

2⁵⁷⁰²⁸ is an apocalyptic number.

It is an amenable number.

57028 is a deficient number, since it is larger than the sum of its proper divisors (45032).

57028 is a wasteful number, since it uses less digits than its factorization.

57028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 57028 is about 238.8053600738. The cubic root of 57028 is about 38.4913119205.

The spelling of 57028 in words is "fifty-seven thousand, twenty-eight".