28537056 has 48 divisors (see below), whose sum is σ = 83235600. Its totient is φ = 9512064.

The previous prime is 28537039. The next prime is 28537063. The reversal of 28537056 is 65073582.

28537056 is a `hidden beast` number, since 285 + 370 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28537056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15651 + ... + 17378.

It is an arithmetic number, because the mean of its divisors is an integer number (1734075).

Almost surely, 2^28537056 is an apocalyptic number.

It is an amenable number.

28537056 is an abundant number, since it is smaller than the sum of its proper divisors (54698544).

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

28537056 is a wasteful number, since it uses less digits than its factorization.

28537056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33048 (or 33034 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 28537056 is about 5342.0086110002. The cubic root of 28537056 is about 305.5880654678.

The spelling of 28537056 in words is "twenty-eight million, five hundred thirty-seven thousand, fifty-six".