18366672 has 40 divisors (see below), whose sum is σ = 47675520. Its totient is φ = 6092800.

The previous prime is 18366637. The next prime is 18366679. The reversal of 18366672 is 27666381.

It is a self number, because there is not a number n which added to its sum of digits gives 18366672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18366679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10672 + ... + 12272.

It is an arithmetic number, because the mean of its divisors is an integer number (1191888).

Almost surely, 2^18366672 is an apocalyptic number.

18366672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18366672 is an abundant number, since it is smaller than the sum of its proper divisors (29308848).

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

18366672 is a wasteful number, since it uses less digits than its factorization.

18366672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851 (or 1845 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 18366672 is about 4285.6355421337. The cubic root of 18366672 is about 263.8417325025.

The spelling of 18366672 in words is "eighteen million, three hundred sixty-six thousand, six hundred seventy-two".