18867672 has 24 divisors (see below), whose sum is σ = 51100140. Its totient is φ = 6289200.

The previous prime is 18867647. The next prime is 18867677. The reversal of 18867672 is 27676881.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18867677) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 130954 + ... + 131097.

Almost surely, 2^18867672 is an apocalyptic number.

18867672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18867672 is an abundant number, since it is smaller than the sum of its proper divisors (32232468).

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

18867672 is a wasteful number, since it uses less digits than its factorization.

18867672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262063 (or 262056 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 18867672 is about 4343.6933593429. The cubic root of 18867672 is about 266.2192399827.

The spelling of 18867672 in words is "eighteen million, eight hundred sixty-seven thousand, six hundred seventy-two".