18466224 has 40 divisors (see below), whose sum is σ = 54520320. Its totient is φ = 5275968.

The previous prime is 18466213. The next prime is 18466229. The reversal of 18466224 is 42266481.

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

It is not an unprimeable number, because it can be changed into a prime (18466229) 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, 27144 + ... + 27815.

It is an arithmetic number, because the mean of its divisors is an integer number (1363008).

Almost surely, 2^18466224 is an apocalyptic number.

18466224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18466224 is an abundant number, since it is smaller than the sum of its proper divisors (36054096).

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

18466224 is a wasteful number, since it uses less digits than its factorization.

18466224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54977 (or 54971 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 18466224 is about 4297.2344595100. The cubic root of 18466224 is about 264.3175700861.

The spelling of 18466224 in words is "eighteen million, four hundred sixty-six thousand, two hundred twenty-four".