18372204 has 48 divisors (see below), whose sum is σ = 48361600. Its totient is φ = 6030288.

The previous prime is 18372197. The next prime is 18372209. The reversal of 18372204 is 40227381.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (18372209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5967 + ... + 8505.

Almost surely, 2^18372204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18372204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24180800).

18372204 is an abundant number, since it is smaller than the sum of its proper divisors (29989396).

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

18372204 is a wasteful number, since it uses less digits than its factorization.

18372204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2619 (or 2611 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 18372204 is about 4286.2809054004. The cubic root of 18372204 is about 263.8682193541.

Adding to 18372204 its reverse (40227381), we get a palindrome (58599585).

The spelling of 18372204 in words is "eighteen million, three hundred seventy-two thousand, two hundred four".