18372904 has 32 divisors (see below), whose sum is σ = 37765440. Its totient is φ = 8310400.

The previous prime is 18372889. The next prime is 18372953. The reversal of 18372904 is 40927381.

It is a self number, because there is not a number n which added to its sum of digits gives 18372904.

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, 24357 + ... + 25099.

It is an arithmetic number, because the mean of its divisors is an integer number (1180170).

Almost surely, 2^18372904 is an apocalyptic number.

It is an amenable number.

18372904 is an abundant number, since it is smaller than the sum of its proper divisors (19392536).

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

18372904 is a wasteful number, since it uses less digits than its factorization.

18372904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041 (or 1037 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 18372904 is about 4286.3625604935. The cubic root of 18372904 is about 263.8715705290.

The spelling of 18372904 in words is "eighteen million, three hundred seventy-two thousand, nine hundred four".