57428868 has 48 divisors (see below), whose sum is σ = 161208320. Its totient is φ = 15544224.

The previous prime is 57428867. The next prime is 57428869. The reversal of 57428868 is 86882475.

It is an interprime number because it is at equal distance from previous prime (57428867) and next prime (57428869).

It is a super-2 number, since 2×57428868² = 6596149759522848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57428867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16396 + ... + 19587.

Almost surely, 2^57428868 is an apocalyptic number.

It is an amenable number.

57428868 is an abundant number, since it is smaller than the sum of its proper divisors (103779452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57428868 is a wasteful number, since it uses less digits than its factorization.

57428868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36016 (or 36014 counting only the distinct ones).

The product of its digits is 860160, while the sum is 48.

The square root of 57428868 is about 7578.1836874016. The cubic root of 57428868 is about 385.8129065477.

The spelling of 57428868 in words is "fifty-seven million, four hundred twenty-eight thousand, eight hundred sixty-eight".