13444144 has 80 divisors (see below), whose sum is σ = 32997888. Its totient is φ = 5170176.

The previous prime is 13444129. The next prime is 13444147. The reversal of 13444144 is 44144431.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13444147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43639 + ... + 43945.

Almost surely, 2^13444144 is an apocalyptic number.

13444144 is a gapful number since it is divisible by the number (14) 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 13444144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16498944).

13444144 is an abundant number, since it is smaller than the sum of its proper divisors (19553744).

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

13444144 is a wasteful number, since it uses less digits than its factorization.

13444144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362 (or 356 counting only the distinct ones).

The product of its digits is 3072, while the sum is 25.

The square root of 13444144 is about 3666.6256967408. The cubic root of 13444144 is about 237.7813117230.

Adding to 13444144 its reverse (44144431), we get a palindrome (57588575).

The spelling of 13444144 in words is "thirteen million, four hundred forty-four thousand, one hundred forty-four".