13444320 has 96 divisors (see below), whose sum is σ = 43551648. Its totient is φ = 3483648.

The previous prime is 13444307. The next prime is 13444367. The reversal of 13444320 is 2344431.

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

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, 17382 + ... + 18138.

It is an arithmetic number, because the mean of its divisors is an integer number (453663).

Almost surely, 2^13444320 is an apocalyptic number.

13444320 is a gapful number since it is divisible by the number (10) 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 13444320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21775824).

13444320 is an abundant number, since it is smaller than the sum of its proper divisors (30107328).

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

13444320 is a wasteful number, since it uses less digits than its factorization.

13444320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812 (or 804 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 13444320 is about 3666.6496969304. The cubic root of 13444320 is about 237.7823493329.

Adding to 13444320 its reverse (2344431), we get a palindrome (15788751).

The spelling of 13444320 in words is "thirteen million, four hundred forty-four thousand, three hundred twenty".