18798572 has 12 divisors (see below), whose sum is σ = 35428176. Its totient is φ = 8676240.

The previous prime is 18798569. The next prime is 18798589. The reversal of 18798572 is 27589781.

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, 180704 + ... + 180807.

It is an arithmetic number, because the mean of its divisors is an integer number (2952348).

Almost surely, 2^18798572 is an apocalyptic number.

It is an amenable number.

18798572 is a deficient number, since it is larger than the sum of its proper divisors (16629604).

18798572 is a wasteful number, since it uses less digits than its factorization.

18798572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361528 (or 361526 counting only the distinct ones).

The product of its digits is 282240, while the sum is 47.

The square root of 18798572 is about 4335.7320027880. The cubic root of 18798572 is about 265.8938465001.

The spelling of 18798572 in words is "eighteen million, seven hundred ninety-eight thousand, five hundred seventy-two".