18899672 has 32 divisors (see below), whose sum is σ = 38843280. Its totient is φ = 8549760.

The previous prime is 18899663. The next prime is 18899693. The reversal of 18899672 is 27699881.

It is a self number, because there is not a number n which added to its sum of digits gives 18899672.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25418 + ... + 26150.

Almost surely, 2^18899672 is an apocalyptic number.

It is an amenable number.

18899672 is an abundant number, since it is smaller than the sum of its proper divisors (19943608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18899672 is a wasteful number, since it uses less digits than its factorization.

18899672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043 (or 1039 counting only the distinct ones).

The product of its digits is 435456, while the sum is 50.

The square root of 18899672 is about 4347.3753001093. The cubic root of 18899672 is about 266.3696596011.

The spelling of 18899672 in words is "eighteen million, eight hundred ninety-nine thousand, six hundred seventy-two".