18068288 has 56 divisors (see below), whose sum is σ = 42330624. Its totient is φ = 7488000.

The previous prime is 18068279. The next prime is 18068333. The reversal of 18068288 is 88286081.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13238 + ... + 14538.

It is an arithmetic number, because the mean of its divisors is an integer number (755904).

Almost surely, 2^18068288 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 18068288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21165312).

18068288 is an abundant number, since it is smaller than the sum of its proper divisors (24262336).

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

18068288 is a wasteful number, since it uses less digits than its factorization.

18068288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351 (or 1341 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 41.

The square root of 18068288 is about 4250.6808866345. The cubic root of 18068288 is about 262.4051382099.

The spelling of 18068288 in words is "eighteen million, sixty-eight thousand, two hundred eighty-eight".