18852172 has 12 divisors (see below), whose sum is σ = 33532576. Its totient is φ = 9271440.

The previous prime is 18852151. The next prime is 18852173. The reversal of 18852172 is 27125881.

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 not an unprimeable number, because it can be changed into a prime (18852173) by changing a digit.

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, 38388 + ... + 38875.

Almost surely, 2^18852172 is an apocalyptic number.

It is an amenable number.

18852172 is a deficient number, since it is larger than the sum of its proper divisors (14680404).

18852172 is a wasteful number, since it uses less digits than its factorization.

18852172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77328 (or 77326 counting only the distinct ones).

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

The square root of 18852172 is about 4341.9087968312. The cubic root of 18852172 is about 266.1463193331.

The spelling of 18852172 in words is "eighteen million, eight hundred fifty-two thousand, one hundred seventy-two".