28806475 has 12 divisors (see below), whose sum is σ = 36225360. Its totient is φ = 22719200.

The previous prime is 28806443. The next prime is 28806497. The reversal of 28806475 is 57460882.

It is not a de Polignac number, because 28806475 - 2⁵ = 28806443 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6340 + ... + 9889.

It is an arithmetic number, because the mean of its divisors is an integer number (3018780).

Almost surely, 2^28806475 is an apocalyptic number.

28806475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28806475 is a deficient number, since it is larger than the sum of its proper divisors (7418885).

28806475 is a wasteful number, since it uses less digits than its factorization.

28806475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16310 (or 16305 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 28806475 is about 5367.1663846018. The cubic root of 28806475 is about 306.5467427804.

The spelling of 28806475 in words is "twenty-eight million, eight hundred six thousand, four hundred seventy-five".