28566475 has 24 divisors (see below), whose sum is σ = 40711680. Its totient is φ = 19477920.

The previous prime is 28566457. The next prime is 28566487. The reversal of 28566475 is 57466582.

It is not a de Polignac number, because 28566475 - 2⁷ = 28566347 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41484 + ... + 42166.

It is an arithmetic number, because the mean of its divisors is an integer number (1696320).

Almost surely, 2^28566475 is an apocalyptic number.

28566475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28566475 is a deficient number, since it is larger than the sum of its proper divisors (12145205).

28566475 is a wasteful number, since it uses less digits than its factorization.

28566475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939 (or 934 counting only the distinct ones).

The product of its digits is 403200, while the sum is 43.

The square root of 28566475 is about 5344.7614539846. The cubic root of 28566475 is about 305.6930401804.

The spelling of 28566475 in words is "twenty-eight million, five hundred sixty-six thousand, four hundred seventy-five".