57329720 has 32 divisors (see below), whose sum is σ = 147420000. Its totient is φ = 19655808.

The previous prime is 57329693. The next prime is 57329737. The reversal of 57329720 is 2792375.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102095 + ... + 102654.

It is an arithmetic number, because the mean of its divisors is an integer number (4606875).

Almost surely, 2^57329720 is an apocalyptic number.

It is an amenable number.

57329720 is an abundant number, since it is smaller than the sum of its proper divisors (90090280).

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

57329720 is a wasteful number, since it uses less digits than its factorization.

57329720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204767 (or 204763 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 57329720 is about 7571.6391884453. The cubic root of 57329720 is about 385.5907499087.

The spelling of 57329720 in words is "fifty-seven million, three hundred twenty-nine thousand, seven hundred twenty".