18304036 has 12 divisors (see below), whose sum is σ = 33916428. Its totient is φ = 8613632.

The previous prime is 18304031. The next prime is 18304037. The reversal of 18304036 is 63040381.

It can be written as a sum of positive squares in 2 ways, for example, as 7806436 + 10497600 = 2794^2 + 3240^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18304036.

It is not an unprimeable number, because it can be changed into a prime (18304031) 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, 134521 + ... + 134656.

It is an arithmetic number, because the mean of its divisors is an integer number (2826369).

Almost surely, 2^18304036 is an apocalyptic number.

It is an amenable number.

18304036 is a deficient number, since it is larger than the sum of its proper divisors (15612392).

18304036 is a wasteful number, since it uses less digits than its factorization.

18304036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269198 (or 269196 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 18304036 is about 4278.3216335381. The cubic root of 18304036 is about 263.5414637572.

The spelling of 18304036 in words is "eighteen million, three hundred four thousand, thirty-six".