18004628 has 24 divisors (see below), whose sum is σ = 33337920. Its totient is φ = 8484480.

The previous prime is 18004627. The next prime is 18004639. The reversal of 18004628 is 82640081.

It is a self number, because there is not a number n which added to its sum of digits gives 18004628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18004627) 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, 17825 + ... + 18807.

It is an arithmetic number, because the mean of its divisors is an integer number (1389080).

Almost surely, 2^18004628 is an apocalyptic number.

It is an amenable number.

18004628 is a deficient number, since it is larger than the sum of its proper divisors (15333292).

18004628 is a wasteful number, since it uses less digits than its factorization.

18004628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247 (or 1245 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 18004628 is about 4243.1860670963. The cubic root of 18004628 is about 262.0965982206.

The spelling of 18004628 in words is "eighteen million, four thousand, six hundred twenty-eight".