18231268 has 12 divisors (see below), whose sum is σ = 34805232. Its totient is φ = 8286920.

The previous prime is 18231229. The next prime is 18231271. The reversal of 18231268 is 86213281.

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, 207130 + ... + 207217.

It is an arithmetic number, because the mean of its divisors is an integer number (2900436).

Almost surely, 2^18231268 is an apocalyptic number.

It is an amenable number.

18231268 is a deficient number, since it is larger than the sum of its proper divisors (16573964).

18231268 is a wasteful number, since it uses less digits than its factorization.

18231268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414362 (or 414360 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 18231268 is about 4269.8088950209. The cubic root of 18231268 is about 263.1917621058.

The spelling of 18231268 in words is "eighteen million, two hundred thirty-one thousand, two hundred sixty-eight".