18946672 has 20 divisors (see below), whose sum is σ = 36901656. Its totient is φ = 9423680.

The previous prime is 18946663. The next prime is 18946679. The reversal of 18946672 is 27664981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18946679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147 + ... + 6157.

Almost surely, 2^18946672 is an apocalyptic number.

It is an amenable number.

18946672 is a deficient number, since it is larger than the sum of its proper divisors (17954984).

18946672 is a wasteful number, since it uses less digits than its factorization.

18946672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6216 (or 6210 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 18946672 is about 4352.7775040771. Note that the first 3 decimals coincide. The cubic root of 18946672 is about 266.5902808994.

The spelling of 18946672 in words is "eighteen million, nine hundred forty-six thousand, six hundred seventy-two".