18397204 has 24 divisors (see below), whose sum is σ = 37264640. Its totient is φ = 7783776.

The previous prime is 18397193. The next prime is 18397207. The reversal of 18397204 is 40279381.

It is a self number, because there is not a number n which added to its sum of digits gives 18397204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18397207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1947 + ... + 6370.

Almost surely, 2^18397204 is an apocalyptic number.

18397204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18397204 is an abundant number, since it is smaller than the sum of its proper divisors (18867436).

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

18397204 is a wasteful number, since it uses less digits than its factorization.

18397204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8407 (or 8405 counting only the distinct ones).

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

The square root of 18397204 is about 4289.1961950930. The cubic root of 18397204 is about 263.9878514459.

The spelling of 18397204 in words is "eighteen million, three hundred ninety-seven thousand, two hundred four".