18728852 has 12 divisors (see below), whose sum is σ = 33082560. Its totient is φ = 9276696.

The previous prime is 18728839. The next prime is 18728861. The reversal of 18728852 is 25882781.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21452 + ... + 22307.

It is an arithmetic number, because the mean of its divisors is an integer number (2756880).

Almost surely, 2^18728852 is an apocalyptic number.

It is an amenable number.

18728852 is a deficient number, since it is larger than the sum of its proper divisors (14353708).

18728852 is a wasteful number, since it uses less digits than its factorization.

18728852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43870 (or 43868 counting only the distinct ones).

The product of its digits is 71680, while the sum is 41.

The square root of 18728852 is about 4327.6843692672. The cubic root of 18728852 is about 265.5647242610.

The spelling of 18728852 in words is "eighteen million, seven hundred twenty-eight thousand, eight hundred fifty-two".