18322224 has 20 divisors (see below), whose sum is σ = 47332536. Its totient is φ = 6107392.

The previous prime is 18322219. The next prime is 18322231. The reversal of 18322224 is 42222381.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 18322194 and 18322203.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 190809 + ... + 190904.

Almost surely, 2^18322224 is an apocalyptic number.

It is an amenable number.

18322224 is an abundant number, since it is smaller than the sum of its proper divisors (29010312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18322224 is a wasteful number, since it uses less digits than its factorization.

18322224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381724 (or 381718 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

The square root of 18322224 is about 4280.4467056605. The cubic root of 18322224 is about 263.6287251201.

The spelling of 18322224 in words is "eighteen million, three hundred twenty-two thousand, two hundred twenty-four".