13881324 has 48 divisors (see below), whose sum is σ = 34473600. Its totient is φ = 4334976.

The previous prime is 13881323. The next prime is 13881331. The reversal of 13881324 is 42318831.

It is a junction number, because it is equal to n+sod(n) for n = 13881291 and 13881300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13881323) 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, 24112 + ... + 24680.

It is an arithmetic number, because the mean of its divisors is an integer number (718200).

Almost surely, 2^13881324 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 13881324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17236800).

13881324 is an abundant number, since it is smaller than the sum of its proper divisors (20592276).

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

13881324 is a wasteful number, since it uses less digits than its factorization.

13881324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702 (or 700 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 13881324 is about 3725.7648879123. The cubic root of 13881324 is about 240.3312786277.

The spelling of 13881324 in words is "thirteen million, eight hundred eighty-one thousand, three hundred twenty-four".