18445344 has 48 divisors (see below), whose sum is σ = 48666240. Its totient is φ = 6117120.

The previous prime is 18445337. The next prime is 18445373. The reversal of 18445344 is 44354481.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25662 + ... + 26370.

It is an arithmetic number, because the mean of its divisors is an integer number (1013880).

Almost surely, 2^18445344 is an apocalyptic number.

It is an amenable number.

18445344 is an abundant number, since it is smaller than the sum of its proper divisors (30220896).

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

18445344 is a wasteful number, since it uses less digits than its factorization.

18445344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993 (or 985 counting only the distinct ones).

The product of its digits is 30720, while the sum is 33.

The square root of 18445344 is about 4294.8043028757. The cubic root of 18445344 is about 264.2179100747.

The spelling of 18445344 in words is "eighteen million, four hundred forty-five thousand, three hundred forty-four".