28088604 has 36 divisors (see below), whose sum is σ = 73295040. Its totient is φ = 9060480.

The previous prime is 28088561. The next prime is 28088623. The reversal of 28088604 is 40688082.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 11469 + ... + 13700.

Almost surely, 2^28088604 is an apocalyptic number.

It is an amenable number.

28088604 is an abundant number, since it is smaller than the sum of its proper divisors (45206436).

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

28088604 is a wasteful number, since it uses less digits than its factorization.

28088604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25210 (or 25205 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 28088604 is about 5299.8683002505. The cubic root of 28088604 is about 303.9788622191.

The spelling of 28088604 in words is "twenty-eight million, eighty-eight thousand, six hundred four".