18014688 has 72 divisors (see below), whose sum is σ = 52009776. Its totient is φ = 5913600.

The previous prime is 18014687. The next prime is 18014693. The reversal of 18014688 is 88641081.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18014687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20008 + ... + 20888.

It is an arithmetic number, because the mean of its divisors is an integer number (722358).

Almost surely, 2^18014688 is an apocalyptic number.

18014688 is a gapful number since it is divisible by the number (18) 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 18014688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26004888).

18014688 is an abundant number, since it is smaller than the sum of its proper divisors (33995088).

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

18014688 is a wasteful number, since it uses less digits than its factorization.

18014688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968 (or 957 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 18014688 is about 4244.3713315402. The cubic root of 18014688 is about 262.1454042063.

The spelling of 18014688 in words is "eighteen million, fourteen thousand, six hundred eighty-eight".