57307904 has 36 divisors (see below), whose sum is σ = 119377776. Its totient is φ = 27405312.

The previous prime is 57307903. The next prime is 57307961. The reversal of 57307904 is 40970375.

It is a super-3 number, since 3×57307904³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (57307903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1022 + ... + 10754.

Almost surely, 2^57307904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57307904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59688888).

57307904 is an abundant number, since it is smaller than the sum of its proper divisors (62069872).

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

57307904 is an equidigital number, since it uses as much as digits as its factorization.

57307904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9772 (or 9758 counting only the distinct ones).

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

The square root of 57307904 is about 7570.1984121950. The cubic root of 57307904 is about 385.5418333662.

The spelling of 57307904 in words is "fifty-seven million, three hundred seven thousand, nine hundred four".