18434244 has 12 divisors (see below), whose sum is σ = 43013264. Its totient is φ = 6144744.

The previous prime is 18434209. The next prime is 18434249. The reversal of 18434244 is 44243481.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (18434249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 768082 + ... + 768105.

Almost surely, 2^18434244 is an apocalyptic number.

It is an amenable number.

18434244 is an abundant number, since it is smaller than the sum of its proper divisors (24579020).

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

18434244 is a wasteful number, since it uses less digits than its factorization.

18434244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536194 (or 1536192 counting only the distinct ones).

The product of its digits is 12288, while the sum is 30.

The square root of 18434244 is about 4293.5118492907. The cubic root of 18434244 is about 264.1648992751.

The spelling of 18434244 in words is "eighteen million, four hundred thirty-four thousand, two hundred forty-four".