18504768 has 56 divisors (see below), whose sum is σ = 50556160. Its totient is φ = 5967360.

The previous prime is 18504713. The next prime is 18504833. The reversal of 18504768 is 86740581.

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, 4398 + ... + 7506.

Almost surely, 2^18504768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18504768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25278080).

18504768 is an abundant number, since it is smaller than the sum of its proper divisors (32051392).

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

18504768 is a wasteful number, since it uses less digits than its factorization.

18504768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3155 (or 3145 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 18504768 is about 4301.7168665546. The cubic root of 18504768 is about 264.5013430177.

The spelling of 18504768 in words is "eighteen million, five hundred four thousand, seven hundred sixty-eight".