18227204 has 12 divisors (see below), whose sum is σ = 32003664. Its totient is φ = 9083304.

The previous prime is 18227203. The next prime is 18227219. The reversal of 18227204 is 40272281.

It is not an unprimeable number, because it can be changed into a prime (18227203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6194 + ... + 8649.

It is an arithmetic number, because the mean of its divisors is an integer number (2666972).

Almost surely, 2^18227204 is an apocalyptic number.

It is an amenable number.

18227204 is a deficient number, since it is larger than the sum of its proper divisors (13776460).

18227204 is a wasteful number, since it uses less digits than its factorization.

18227204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15154 (or 15152 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 18227204 is about 4269.3329689777. The cubic root of 18227204 is about 263.1722042998.

Adding to 18227204 its reverse (40272281), we get a palindrome (58499485).

The spelling of 18227204 in words is "eighteen million, two hundred twenty-seven thousand, two hundred four".