57728799 has 6 divisors (see below), whose sum is σ = 83386056. Its totient is φ = 38485860.

The previous prime is 57728791. The next prime is 57728857. The reversal of 57728799 is 99782775.

It is not a de Polignac number, because 57728799 - 2³ = 57728791 is a prime.

It is a super-2 number, since 2×57728799² = 6665228467964802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57728791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3207147 + ... + 3207164.

It is an arithmetic number, because the mean of its divisors is an integer number (13897676).

Almost surely, 2^57728799 is an apocalyptic number.

57728799 is a deficient number, since it is larger than the sum of its proper divisors (25657257).

57728799 is a wasteful number, since it uses less digits than its factorization.

57728799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6414317 (or 6414314 counting only the distinct ones).

The product of its digits is 2222640, while the sum is 54.

The square root of 57728799 is about 7597.9470253484. The cubic root of 57728799 is about 386.4833961874.

The spelling of 57728799 in words is "fifty-seven million, seven hundred twenty-eight thousand, seven hundred ninety-nine".