18518704 has 40 divisors (see below), whose sum is σ = 37564560. Its totient is φ = 8832768.

The previous prime is 18518663. The next prime is 18518707. The reversal of 18518704 is 40781581.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18518704.

It is not an unprimeable number, because it can be changed into a prime (18518707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49462 + ... + 49834.

It is an arithmetic number, because the mean of its divisors is an integer number (939114).

Almost surely, 2^18518704 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 18518704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18782280).

18518704 is an abundant number, since it is smaller than the sum of its proper divisors (19045856).

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

18518704 is a wasteful number, since it uses less digits than its factorization.

18518704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517 (or 511 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 18518704 is about 4303.3363800661. The cubic root of 18518704 is about 264.5677252922.

The spelling of 18518704 in words is "eighteen million, five hundred eighteen thousand, seven hundred four".