28875404 has 12 divisors (see below), whose sum is σ = 50611344. Its totient is φ = 14415024.

The previous prime is 28875389. The next prime is 28875409. The reversal of 28875404 is 40457882.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28875409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2624 + ... + 8039.

It is an arithmetic number, because the mean of its divisors is an integer number (4217612).

Almost surely, 2^28875404 is an apocalyptic number.

It is an amenable number.

28875404 is a deficient number, since it is larger than the sum of its proper divisors (21735940).

28875404 is a wasteful number, since it uses less digits than its factorization.

28875404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11344 (or 11342 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 28875404 is about 5373.5839064818. The cubic root of 28875404 is about 306.7910527759.

The spelling of 28875404 in words is "twenty-eight million, eight hundred seventy-five thousand, four hundred four".