18108672 has 144 divisors (see below), whose sum is σ = 54452160. Its totient is φ = 5308416.

The previous prime is 18108667. The next prime is 18108697. The reversal of 18108672 is 27680181.

It is a happy number.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248028 + ... + 248100.

It is an arithmetic number, because the mean of its divisors is an integer number (378140).

Almost surely, 2^18108672 is an apocalyptic number.

18108672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18108672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27226080).

18108672 is an abundant number, since it is smaller than the sum of its proper divisors (36343488).

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

18108672 is a wasteful number, since it uses less digits than its factorization.

18108672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 18108672 is about 4255.4285330622. The cubic root of 18108672 is about 262.6004912299.

The spelling of 18108672 in words is "eighteen million, one hundred eight thousand, six hundred seventy-two".