57628620 has 72 divisors (see below), whose sum is σ = 199783584. Its totient is φ = 13171968.

The previous prime is 57628567. The next prime is 57628631. The reversal of 57628620 is 2682675.

57628620 is a `hidden beast` number, since 5 + 7 + 6 + 28 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 21609 + ... + 24128.

It is an arithmetic number, because the mean of its divisors is an integer number (2774772).

Almost surely, 2^57628620 is an apocalyptic number.

It is an amenable number.

57628620 is an abundant number, since it is smaller than the sum of its proper divisors (142154964).

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

57628620 is a wasteful number, since it uses less digits than its factorization.

57628620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45759 (or 45754 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 57628620 is about 7591.3516583017. The cubic root of 57628620 is about 386.2597069229.

The spelling of 57628620 in words is "fifty-seven million, six hundred twenty-eight thousand, six hundred twenty".