13443872 has 48 divisors (see below), whose sum is σ = 30196152. Its totient is φ = 5836800.

The previous prime is 13443853. The next prime is 13443919. The reversal of 13443872 is 27834431.

It can be written as a sum of positive squares in 4 ways, for example, as 8042896 + 5400976 = 2836^2 + 2324^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 6122 + ... + 8022.

Almost surely, 2^13443872 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 13443872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15098076).

13443872 is an abundant number, since it is smaller than the sum of its proper divisors (16752280).

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

13443872 is a wasteful number, since it uses less digits than its factorization.

13443872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941 (or 1933 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 13443872 is about 3666.5886052297. The cubic root of 13443872 is about 237.7797081264.

The spelling of 13443872 in words is "thirteen million, four hundred forty-three thousand, eight hundred seventy-two".