18330628 has 12 divisors (see below), whose sum is σ = 32112640. Its totient is φ = 9155592.

The previous prime is 18330623. The next prime is 18330629. The reversal of 18330628 is 82603381.

It is a self number, because there is not a number n which added to its sum of digits gives 18330628.

It is not an unprimeable number, because it can be changed into a prime (18330623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3325 + ... + 6907.

Almost surely, 2^18330628 is an apocalyptic number.

It is an amenable number.

18330628 is a deficient number, since it is larger than the sum of its proper divisors (13782012).

18330628 is a wasteful number, since it uses less digits than its factorization.

18330628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4866 (or 4864 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 18330628 is about 4281.4282663616. The cubic root of 18330628 is about 263.6690258527.

The spelling of 18330628 in words is "eighteen million, three hundred thirty thousand, six hundred twenty-eight".