18884448 has 96 divisors (see below), whose sum is σ = 60117120. Its totient is φ = 5719680.

The previous prime is 18884407. The next prime is 18884473. The reversal of 18884448 is 84448881.

It is a tau number, because it is divible by the number of its divisors (96).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 8511 + ... + 10497.

It is an arithmetic number, because the mean of its divisors is an integer number (626220).

Almost surely, 2^18884448 is an apocalyptic number.

18884448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18884448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30058560).

18884448 is an abundant number, since it is smaller than the sum of its proper divisors (41232672).

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

18884448 is a wasteful number, since it uses less digits than its factorization.

18884448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2017 (or 2003 counting only the distinct ones).

The product of its digits is 262144, while the sum is 45.

The square root of 18884448 is about 4345.6240058247. The cubic root of 18884448 is about 266.2981186588.

It can be divided in two parts, 1888 and 4448, that added together give a palindrome (6336).

The spelling of 18884448 in words is "eighteen million, eight hundred eighty-four thousand, four hundred forty-eight".