18385304 has 32 divisors (see below), whose sum is σ = 40759200. Its totient is φ = 7607040.

The previous prime is 18385277. The next prime is 18385351. The reversal of 18385304 is 40358381.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4037 + ... + 7284.

It is an arithmetic number, because the mean of its divisors is an integer number (1273725).

Almost surely, 2^18385304 is an apocalyptic number.

18385304 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18385304 is an abundant number, since it is smaller than the sum of its proper divisors (22373896).

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

18385304 is a wasteful number, since it uses less digits than its factorization.

18385304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11363 (or 11359 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 18385304 is about 4287.8087643924. The cubic root of 18385304 is about 263.9309200953.

The spelling of 18385304 in words is "eighteen million, three hundred eighty-five thousand, three hundred four".