18228333 has 8 divisors (see below), whose sum is σ = 24324448. Its totient is φ = 12142224.

The previous prime is 18228317. The next prime is 18228347. The reversal of 18228333 is 33382281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18228333 - 2⁴ = 18228317 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18228333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18228533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4791 + ... + 7707.

It is an arithmetic number, because the mean of its divisors is an integer number (3040556).

Almost surely, 2^18228333 is an apocalyptic number.

It is an amenable number.

18228333 is a deficient number, since it is larger than the sum of its proper divisors (6096115).

18228333 is a wasteful number, since it uses less digits than its factorization.

18228333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5003.

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

The square root of 18228333 is about 4269.4651889903. The cubic root of 18228333 is about 263.1776378500.

The spelling of 18228333 in words is "eighteen million, two hundred twenty-eight thousand, three hundred thirty-three".