18434224 has 20 divisors (see below), whose sum is σ = 37269936. Its totient is φ = 8816192.

The previous prime is 18434209. The next prime is 18434249. The reversal of 18434224 is 42243481.

It is a happy number.

It is a super-2 number, since 2×18434224² = 679641228964352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18434192 and 18434201.

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, 24679 + ... + 25414.

Almost surely, 2^18434224 is an apocalyptic number.

It is an amenable number.

18434224 is an abundant number, since it is smaller than the sum of its proper divisors (18835712).

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

18434224 is a wasteful number, since it uses less digits than its factorization.

18434224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50124 (or 50118 counting only the distinct ones).

The product of its digits is 6144, while the sum is 28.

The square root of 18434224 is about 4293.5095201944. The cubic root of 18434224 is about 264.1648037409.

The spelling of 18434224 in words is "eighteen million, four hundred thirty-four thousand, two hundred twenty-four".