18285604 has 12 divisors (see below), whose sum is σ = 32524828. Its totient is φ = 8992800.

The previous prime is 18285599. The next prime is 18285611. The reversal of 18285604 is 40658281.

It can be written as a sum of positive squares in 2 ways, for example, as 1557504 + 16728100 = 1248^2 + 4090^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18285604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37227 + ... + 37714.

Almost surely, 2^18285604 is an apocalyptic number.

It is an amenable number.

18285604 is a deficient number, since it is larger than the sum of its proper divisors (14239224).

18285604 is a wasteful number, since it uses less digits than its factorization.

18285604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75006 (or 75004 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 18285604 is about 4276.1669752244. The cubic root of 18285604 is about 263.4529727510.

The spelling of 18285604 in words is "eighteen million, two hundred eighty-five thousand, six hundred four".