18805372 has 6 divisors (see below), whose sum is σ = 32909408. Its totient is φ = 9402684.

The previous prime is 18805343. The next prime is 18805373. The reversal of 18805372 is 27350881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18805373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2350668 + ... + 2350675.

Almost surely, 2^18805372 is an apocalyptic number.

It is an amenable number.

18805372 is a deficient number, since it is larger than the sum of its proper divisors (14104036).

18805372 is a wasteful number, since it uses less digits than its factorization.

18805372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4701347 (or 4701345 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 18805372 is about 4336.5161131950. The cubic root of 18805372 is about 265.9259031937.

The spelling of 18805372 in words is "eighteen million, eight hundred five thousand, three hundred seventy-two".