57023240 has 32 divisors (see below), whose sum is σ = 128520000. Its totient is φ = 22770624.

The previous prime is 57023209. The next prime is 57023261. The reversal of 57023240 is 4232075.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 40061 + ... + 41459.

It is an arithmetic number, because the mean of its divisors is an integer number (4016250).

Almost surely, 2^57023240 is an apocalyptic number.

It is an amenable number.

57023240 is an abundant number, since it is smaller than the sum of its proper divisors (71496760).

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

57023240 is a wasteful number, since it uses less digits than its factorization.

57023240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429 (or 2425 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 57023240 is about 7551.3733850208. The cubic root of 57023240 is about 384.9024096269.

The spelling of 57023240 in words is "fifty-seven million, twenty-three thousand, two hundred forty".