18672204 has 12 divisors (see below), whose sum is σ = 43568504. Its totient is φ = 6224064.

The previous prime is 18672187. The next prime is 18672221. The reversal of 18672204 is 40227681.

It is an interprime number because it is at equal distance from previous prime (18672187) and next prime (18672221).

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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, 777997 + ... + 778020.

Almost surely, 2^18672204 is an apocalyptic number.

It is an amenable number.

18672204 is an abundant number, since it is smaller than the sum of its proper divisors (24896300).

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

18672204 is a wasteful number, since it uses less digits than its factorization.

18672204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1556024 (or 1556022 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 18672204 is about 4321.1345732342. The cubic root of 18672204 is about 265.2967081309.

Adding to 18672204 its reverse (40227681), we get a palindrome (58899885).

It can be divided in two parts, 186 and 72204, that added together give a triangular number (72390 = T₃₈₀).

The spelling of 18672204 in words is "eighteen million, six hundred seventy-two thousand, two hundred four".