18002224 has 10 divisors (see below), whose sum is σ = 34879340. Its totient is φ = 9001104.

The previous prime is 18002189. The next prime is 18002233. The reversal of 18002224 is 42220081.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562554 + ... + 562585.

It is an arithmetic number, because the mean of its divisors is an integer number (3487934).

Almost surely, 2^18002224 is an apocalyptic number.

It is an amenable number.

18002224 is a deficient number, since it is larger than the sum of its proper divisors (16877116).

18002224 is a wasteful number, since it uses less digits than its factorization.

18002224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125147 (or 1125141 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 18002224 is about 4242.9027799373. The cubic root of 18002224 is about 262.0849325483.

The spelling of 18002224 in words is "eighteen million, two thousand, two hundred twenty-four".