18272804 has 24 divisors (see below), whose sum is σ = 34993056. Its totient is φ = 8280000.

The previous prime is 18272803. The next prime is 18272809. The reversal of 18272804 is 40827281.

It is not an unprimeable number, because it can be changed into a prime (18272803) 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, 26099 + ... + 26789.

It is an arithmetic number, because the mean of its divisors is an integer number (1458044).

Almost surely, 2^18272804 is an apocalyptic number.

It is an amenable number.

18272804 is a deficient number, since it is larger than the sum of its proper divisors (16720252).

18272804 is a wasteful number, since it uses less digits than its factorization.

18272804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307 (or 1305 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 18272804 is about 4274.6700457462. The cubic root of 18272804 is about 263.3914856706.

The spelling of 18272804 in words is "eighteen million, two hundred seventy-two thousand, eight hundred four".