18017252 has 12 divisors (see below), whose sum is σ = 34396656. Its totient is φ = 8189640.

The previous prime is 18017213. The next prime is 18017267. The reversal of 18017252 is 25271081.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204698 + ... + 204785.

It is an arithmetic number, because the mean of its divisors is an integer number (2866388).

Almost surely, 2^18017252 is an apocalyptic number.

It is an amenable number.

18017252 is a deficient number, since it is larger than the sum of its proper divisors (16379404).

18017252 is a wasteful number, since it uses less digits than its factorization.

18017252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409498 (or 409496 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 18017252 is about 4244.6733678812. The cubic root of 18017252 is about 262.1578405200.

The spelling of 18017252 in words is "eighteen million, seventeen thousand, two hundred fifty-two".