18093208 has 16 divisors (see below), whose sum is σ = 38771280. Its totient is φ = 7754208.

The previous prime is 18093199. The next prime is 18093211. The reversal of 18093208 is 80239081.

It is a self number, because there is not a number n which added to its sum of digits gives 18093208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161491 + ... + 161602.

It is an arithmetic number, because the mean of its divisors is an integer number (2423205).

Almost surely, 2^18093208 is an apocalyptic number.

It is an amenable number.

18093208 is an abundant number, since it is smaller than the sum of its proper divisors (20678072).

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

18093208 is a wasteful number, since it uses less digits than its factorization.

18093208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323106 (or 323102 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 18093208 is about 4253.6111716987. The cubic root of 18093208 is about 262.5257202311.

The spelling of 18093208 in words is "eighteen million, ninety-three thousand, two hundred eight".