28566135 has 64 divisors (see below), whose sum is σ = 56165760. Its totient is φ = 13685760.

The previous prime is 28566127. The next prime is 28566143. The reversal of 28566135 is 53166582.

It is an interprime number because it is at equal distance from previous prime (28566127) and next prime (28566143).

It is not a de Polignac number, because 28566135 - 2³ = 28566127 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28566135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 71757 + ... + 72153.

It is an arithmetic number, because the mean of its divisors is an integer number (877590).

Almost surely, 2^28566135 is an apocalyptic number.

28566135 is a deficient number, since it is larger than the sum of its proper divisors (27599625).

28566135 is a wasteful number, since it uses less digits than its factorization.

28566135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465 (or 459 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 28566135 is about 5344.7296470448. The cubic root of 28566135 is about 305.6918273829.

The spelling of 28566135 in words is "twenty-eight million, five hundred sixty-six thousand, one hundred thirty-five".