57028066 has 8 divisors (see below), whose sum is σ = 86037084. Its totient is φ = 28349040.

The previous prime is 57028051. The next prime is 57028073. The reversal of 57028066 is 66082075.

It can be written as a sum of positive squares in 2 ways, for example, as 56685841 + 342225 = 7529^2 + 585^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 82065 + ... + 82756.

Almost surely, 2^57028066 is an apocalyptic number.

57028066 is a deficient number, since it is larger than the sum of its proper divisors (29009018).

57028066 is a wasteful number, since it uses less digits than its factorization.

57028066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164996.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 57028066 is about 7551.6929227823. The cubic root of 57028066 is about 384.9132676948.

The spelling of 57028066 in words is "fifty-seven million, twenty-eight thousand, sixty-six".