57023812 has 12 divisors (see below), whose sum is σ = 99951376. Its totient is φ = 28466280.

The previous prime is 57023803. The next prime is 57023819. The reversal of 57023812 is 21832075.

It is a super-2 number, since 2×57023812² = 6503430270022688, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (57023819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8514 + ... + 13657.

Almost surely, 2^57023812 is an apocalyptic number.

It is an amenable number.

57023812 is a deficient number, since it is larger than the sum of its proper divisors (42927564).

57023812 is a wasteful number, since it uses less digits than its factorization.

57023812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22818 (or 22816 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 57023812 is about 7551.4112588310. The cubic root of 57023812 is about 384.9036966077.

Adding to 57023812 its reverse (21832075), we get a palindrome (78855887).

The spelling of 57023812 in words is "fifty-seven million, twenty-three thousand, eight hundred twelve".