18524872 has 16 divisors (see below), whose sum is σ = 34969500. Its totient is φ = 9199680.

The previous prime is 18524861. The next prime is 18524893. The reversal of 18524872 is 27842581.

It can be written as a sum of positive squares in 2 ways, for example, as 18438436 + 86436 = 4294^2 + 294^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6579 + ... + 8962.

Almost surely, 2^18524872 is an apocalyptic number.

It is an amenable number.

18524872 is a deficient number, since it is larger than the sum of its proper divisors (16444628).

18524872 is a wasteful number, since it uses less digits than its factorization.

18524872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15696 (or 15692 counting only the distinct ones).

The product of its digits is 35840, while the sum is 37.

The square root of 18524872 is about 4304.0529736517. The cubic root of 18524872 is about 264.5970951047.

It can be divided in two parts, 1852 and 4872, that added together give a square (6724 = 82²).

The spelling of 18524872 in words is "eighteen million, five hundred twenty-four thousand, eight hundred seventy-two".