18302224 has 20 divisors (see below), whose sum is σ = 35743744. Its totient is φ = 9078048.

The previous prime is 18302203. The next prime is 18302231. The reversal of 18302224 is 42220381.

It is a junction number, because it is equal to n+sod(n) for n = 18302195 and 18302204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2472 + ... + 6535.

Almost surely, 2^18302224 is an apocalyptic number.

It is an amenable number.

18302224 is a deficient number, since it is larger than the sum of its proper divisors (17441520).

18302224 is a wasteful number, since it uses less digits than its factorization.

18302224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9142 (or 9136 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 18302224 is about 4278.1098630119. The cubic root of 18302224 is about 263.5327670798.

The spelling of 18302224 in words is "eighteen million, three hundred two thousand, two hundred twenty-four".