18009336 has 32 divisors (see below), whose sum is σ = 45153360. Its totient is φ = 5985792.

The previous prime is 18009323. The next prime is 18009401. The reversal of 18009336 is 63390081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9526 + ... + 11258.

Almost surely, 2^18009336 is an apocalyptic number.

It is an amenable number.

18009336 is an abundant number, since it is smaller than the sum of its proper divisors (27144024).

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

18009336 is a wasteful number, since it uses less digits than its factorization.

18009336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2175 (or 2171 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 18009336 is about 4243.7408026410. The cubic root of 18009336 is about 262.1194412964.

The spelling of 18009336 in words is "eighteen million, nine thousand, three hundred thirty-six".