57288732 has 24 divisors (see below), whose sum is σ = 133961856. Its totient is φ = 19055088.

The previous prime is 57288727. The next prime is 57288733. The reversal of 57288732 is 23788275.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57288733) by changing a digit.

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, 943 + ... + 10745.

It is an arithmetic number, because the mean of its divisors is an integer number (5581744).

Almost surely, 2^57288732 is an apocalyptic number.

It is an amenable number.

57288732 is an abundant number, since it is smaller than the sum of its proper divisors (76673124).

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

57288732 is a wasteful number, since it uses less digits than its factorization.

57288732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10297 (or 10295 counting only the distinct ones).

The product of its digits is 188160, while the sum is 42.

The square root of 57288732 is about 7568.9320250614. The cubic root of 57288732 is about 385.4988350365.

The spelling of 57288732 in words is "fifty-seven million, two hundred eighty-eight thousand, seven hundred thirty-two".