18088612 has 12 divisors (see below), whose sum is σ = 33517260. Its totient is φ = 8512256.

The previous prime is 18088607. The next prime is 18088613. The reversal of 18088612 is 21688081.

It can be written as a sum of positive squares in 2 ways, for example, as 16516096 + 1572516 = 4064^2 + 1254^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (18088613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132937 + ... + 133072.

It is an arithmetic number, because the mean of its divisors is an integer number (2793105).

Almost surely, 2^18088612 is an apocalyptic number.

It is an amenable number.

18088612 is a deficient number, since it is larger than the sum of its proper divisors (15428648).

18088612 is a wasteful number, since it uses less digits than its factorization.

18088612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266030 (or 266028 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 34.

The square root of 18088612 is about 4253.0708905449. The cubic root of 18088612 is about 262.5034895984.

The spelling of 18088612 in words is "eighteen million, eighty-eight thousand, six hundred twelve".