18088912 has 40 divisors (see below), whose sum is σ = 37224800. Its totient is φ = 8491392.

The previous prime is 18088909. The next prime is 18088919. The reversal of 18088912 is 21988081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18088919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47539 + ... + 47917.

It is an arithmetic number, because the mean of its divisors is an integer number (930620).

Almost surely, 2^18088912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18088912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18612400).

18088912 is an abundant number, since it is smaller than the sum of its proper divisors (19135888).

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

18088912 is a wasteful number, since it uses less digits than its factorization.

18088912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563 (or 557 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 37.

The square root of 18088912 is about 4253.1061590325. The cubic root of 18088912 is about 262.5049407989.

It can be divided in two parts, 180889 and 12, that added together give a triangular number (180901 = T₆₀₁).

The spelling of 18088912 in words is "eighteen million, eighty-eight thousand, nine hundred twelve".