57128030 has 32 divisors (see below), whose sum is σ = 105722496. Its totient is φ = 22215424.

The previous prime is 57128017. The next prime is 57128059. The reversal of 57128030 is 3082175.

It is a super-2 number, since 2×57128030² = 6527223623361800, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 92282 + ... + 92898.

It is an arithmetic number, because the mean of its divisors is an integer number (3303828).

Almost surely, 2^57128030 is an apocalyptic number.

57128030 is a deficient number, since it is larger than the sum of its proper divisors (48594466).

57128030 is a wasteful number, since it uses less digits than its factorization.

57128030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 57128030 is about 7558.3086732417. The cubic root of 57128030 is about 385.1380401164.

The spelling of 57128030 in words is "fifty-seven million, one hundred twenty-eight thousand, thirty".