28408604 has 12 divisors (see below), whose sum is σ = 56817264. Its totient is φ = 12175104.

The previous prime is 28408577. The next prime is 28408609. The reversal of 28408604 is 40680482.

28408604 is an admirable number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28408609) 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, 507269 + ... + 507324.

It is an arithmetic number, because the mean of its divisors is an integer number (4734772).

Almost surely, 2^28408604 is an apocalyptic number.

It is an amenable number.

28408604 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28408604 is a wasteful number, since it uses less digits than its factorization.

28408604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014604 (or 1014602 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 28408604 is about 5329.9722325731. The cubic root of 28408604 is about 305.1288678761.

The spelling of 28408604 in words is "twenty-eight million, four hundred eight thousand, six hundred four".