28565475 has 24 divisors (see below), whose sum is σ = 47616000. Its totient is φ = 15109920.

The previous prime is 28565447. The next prime is 28565483. The reversal of 28565475 is 57456582.

It is not a de Polignac number, because 28565475 - 2⁷ = 28565347 is a prime.

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, 8026 + ... + 11024.

It is an arithmetic number, because the mean of its divisors is an integer number (1984000).

Almost surely, 2^28565475 is an apocalyptic number.

28565475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28565475 is a deficient number, since it is larger than the sum of its proper divisors (19050525).

28565475 is a wasteful number, since it uses less digits than its factorization.

28565475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3139 (or 3134 counting only the distinct ones).

The product of its digits is 336000, while the sum is 42.

The square root of 28565475 is about 5344.6679036213. The cubic root of 28565475 is about 305.6894731015.

The spelling of 28565475 in words is "twenty-eight million, five hundred sixty-five thousand, four hundred seventy-five".