57304890 has 24 divisors (see below), whose sum is σ = 148992948. Its totient is φ = 15281280.

The previous prime is 57304889. The next prime is 57304963. The reversal of 57304890 is 9840375.

57304890 is a `hidden beast` number, since 573 + 0 + 4 + 89 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 57289761 + 15129 = 7569^2 + 123^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 318271 + ... + 318450.

Almost surely, 2^57304890 is an apocalyptic number.

57304890 is an abundant number, since it is smaller than the sum of its proper divisors (91688058).

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

57304890 is a wasteful number, since it uses less digits than its factorization.

57304890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636734 (or 636731 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 57304890 is about 7569.9993394980. Note that the first 3 decimals coincide. The cubic root of 57304890 is about 385.5350743017.

The spelling of 57304890 in words is "fifty-seven million, three hundred four thousand, eight hundred ninety".