18328233 has 24 divisors (see below), whose sum is σ = 30702784. Its totient is φ = 9519840.

The previous prime is 18328231. The next prime is 18328249. The reversal of 18328233 is 33282381.

It is not a de Polignac number, because 18328233 - 2¹ = 18328231 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18328233.

It is not an unprimeable number, because it can be changed into a prime (18328231) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1066 + ... + 6147.

Almost surely, 2^18328233 is an apocalyptic number.

It is an amenable number.

18328233 is a deficient number, since it is larger than the sum of its proper divisors (12374551).

18328233 is a wasteful number, since it uses less digits than its factorization.

18328233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7245 (or 7234 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 18328233 is about 4281.1485608421. The cubic root of 18328233 is about 263.6575420705.

It can be divided in two parts, 183282 and 33, that added together give a triangular number (183315 = T₆₀₅).

The spelling of 18328233 in words is "eighteen million, three hundred twenty-eight thousand, two hundred thirty-three".