57130308 has 18 divisors (see below), whose sum is σ = 144412814. Its totient is φ = 19043424.

The previous prime is 57130301. The next prime is 57130327. The reversal of 57130308 is 80303175.

It can be written as a sum of positive squares in only one way, i.e., 39841344 + 17288964 = 6312^2 + 4158^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (57130301) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 793441 + ... + 793512.

Almost surely, 2^57130308 is an apocalyptic number.

It is an amenable number.

57130308 is an abundant number, since it is smaller than the sum of its proper divisors (87282506).

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

57130308 is a wasteful number, since it uses less digits than its factorization.

57130308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586963 (or 1586958 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 57130308 is about 7558.4593668287. The cubic root of 57130308 is about 385.1431592193.

The spelling of 57130308 in words is "fifty-seven million, one hundred thirty thousand, three hundred eight".