18128204 has 12 divisors (see below), whose sum is σ = 33394200. Its totient is φ = 8587008.

The previous prime is 18128197. The next prime is 18128207. The reversal of 18128204 is 40282181.

It is not an unprimeable number, because it can be changed into a prime (18128207) 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 3 ways as a sum of consecutive naturals, for example, 119189 + ... + 119340.

It is an arithmetic number, because the mean of its divisors is an integer number (2782850).

Almost surely, 2^18128204 is an apocalyptic number.

It is an amenable number.

18128204 is a deficient number, since it is larger than the sum of its proper divisors (15265996).

18128204 is a wasteful number, since it uses less digits than its factorization.

18128204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238552 (or 238550 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 18128204 is about 4257.7228655703. The cubic root of 18128204 is about 262.6948708695.

The spelling of 18128204 in words is "eighteen million, one hundred twenty-eight thousand, two hundred four".