18000088 has 32 divisors (see below), whose sum is σ = 35118720. Its totient is φ = 8640000.

The previous prime is 18000067. The next prime is 18000089. The reversal of 18000088 is 88000081.

It is a happy number.

It is a Smith number, since the sum of its digits (25) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18000089) 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, 44688 + ... + 45088.

It is an arithmetic number, because the mean of its divisors is an integer number (1097460).

Almost surely, 2^18000088 is an apocalyptic number.

It is an amenable number.

18000088 is a deficient number, since it is larger than the sum of its proper divisors (17118632).

18000088 is a wasteful number, since it uses less digits than its factorization.

18000088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 18000088 is about 4242.6510580061. The cubic root of 18000088 is about 262.0745665040.

The spelling of 18000088 in words is "eighteen million, eighty-eight", and thus it is an aban number and an uban number.