57028284 has 36 divisors (see below), whose sum is σ = 144384240. Its totient is φ = 18979200.

The previous prime is 57028273. The next prime is 57028327. The reversal of 57028284 is 48282075.

It is a happy number.

57028284 is a `hidden beast` number, since 570 + 2 + 8 + 2 + 84 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42577 + ... + 43895.

Almost surely, 2^57028284 is an apocalyptic number.

It is an amenable number.

57028284 is an abundant number, since it is smaller than the sum of its proper divisors (87355956).

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

57028284 is a wasteful number, since it uses less digits than its factorization.

57028284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2530 (or 2525 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 57028284 is about 7551.7073566181. The cubic root of 57028284 is about 384.9137581608.

The spelling of 57028284 in words is "fifty-seven million, twenty-eight thousand, two hundred eighty-four".