57287236 has 12 divisors (see below), whose sum is σ = 100653840. Its totient is φ = 28529000.

The previous prime is 57287231. The next prime is 57287249. The reversal of 57287236 is 63278275.

It is not an unprimeable number, because it can be changed into a prime (57287231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27526 + ... + 29533.

It is an arithmetic number, because the mean of its divisors is an integer number (8387820).

Almost surely, 2^57287236 is an apocalyptic number.

It is an amenable number.

57287236 is a deficient number, since it is larger than the sum of its proper divisors (43366604).

57287236 is a wasteful number, since it uses less digits than its factorization.

57287236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57314 (or 57312 counting only the distinct ones).

The product of its digits is 141120, while the sum is 40.

The square root of 57287236 is about 7568.8331993776. The cubic root of 57287236 is about 385.4954794535.

The spelling of 57287236 in words is "fifty-seven million, two hundred eighty-seven thousand, two hundred thirty-six".