57530240 has 32 divisors (see below), whose sum is σ = 137534760. Its totient is φ = 23011840.

The previous prime is 57530201. The next prime is 57530269. The reversal of 57530240 is 4203575.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44306 + ... + 45585.

Almost surely, 2^57530240 is an apocalyptic number.

It is an amenable number.

57530240 is an abundant number, since it is smaller than the sum of its proper divisors (80004520).

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

57530240 is an equidigital number, since it uses as much as digits as its factorization.

57530240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89910 (or 89898 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 57530240 is about 7584.8691485088. The cubic root of 57530240 is about 386.0397822028.

The spelling of 57530240 in words is "fifty-seven million, five hundred thirty thousand, two hundred forty".