28510475 has 12 divisors (see below), whose sum is σ = 40403664. Its totient is φ = 19549920.

The previous prime is 28510459. The next prime is 28510487. The reversal of 28510475 is 57401582.

It is not a de Polignac number, because 28510475 - 2⁴ = 28510459 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81284 + ... + 81633.

It is an arithmetic number, because the mean of its divisors is an integer number (3366972).

Almost surely, 2^28510475 is an apocalyptic number.

28510475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28510475 is a deficient number, since it is larger than the sum of its proper divisors (11893189).

28510475 is a wasteful number, since it uses less digits than its factorization.

28510475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162934 (or 162929 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 28510475 is about 5339.5201095230. The cubic root of 28510475 is about 305.4931554241.

The spelling of 28510475 in words is "twenty-eight million, five hundred ten thousand, four hundred seventy-five".