18448944 has 80 divisors (see below), whose sum is σ = 52710912. Its totient is φ = 5530624.

The previous prime is 18448939. The next prime is 18448951. The reversal of 18448944 is 44984481.

It is a junction number, because it is equal to n+sod(n) for n = 18448896 and 18448905.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18277 + ... + 19259.

Almost surely, 2^18448944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18448944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26355456).

18448944 is an abundant number, since it is smaller than the sum of its proper divisors (34261968).

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

18448944 is a wasteful number, since it uses less digits than its factorization.

18448944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034 (or 1028 counting only the distinct ones).

The product of its digits is 147456, while the sum is 42.

The square root of 18448944 is about 4295.2233934919. The cubic root of 18448944 is about 264.2350981991.

The spelling of 18448944 in words is "eighteen million, four hundred forty-eight thousand, nine hundred forty-four".