18030444 has 24 divisors (see below), whose sum is σ = 42405888. Its totient is φ = 5962320.

The previous prime is 18030427. The next prime is 18030451. The reversal of 18030444 is 44403081.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4392 + ... + 7439.

It is an arithmetic number, because the mean of its divisors is an integer number (1766912).

Almost surely, 2^18030444 is an apocalyptic number.

It is an amenable number.

18030444 is an abundant number, since it is smaller than the sum of its proper divisors (24375444).

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

18030444 is a wasteful number, since it uses less digits than its factorization.

18030444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11965 (or 11963 counting only the distinct ones).

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

The square root of 18030444 is about 4246.2270311419. The cubic root of 18030444 is about 262.2218077760.

The spelling of 18030444 in words is "eighteen million, thirty thousand, four hundred forty-four".