57038440 has 32 divisors (see below), whose sum is σ = 130258080. Its totient is φ = 22473792.

The previous prime is 57038411. The next prime is 57038453. The reversal of 57038440 is 4483075.

57038440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7962 + ... + 13321.

It is an arithmetic number, because the mean of its divisors is an integer number (4070565).

Almost surely, 2^57038440 is an apocalyptic number.

It is an amenable number.

57038440 is an abundant number, since it is smaller than the sum of its proper divisors (73219640).

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

57038440 is a wasteful number, since it uses less digits than its factorization.

57038440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21361 (or 21357 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 57038440 is about 7552.3797574010. The cubic root of 57038440 is about 384.9366061923.

The spelling of 57038440 in words is "fifty-seven million, thirty-eight thousand, four hundred forty".