13921232 has 80 divisors (see below), whose sum is σ = 31997952. Its totient is φ = 5806080.

The previous prime is 13921231. The next prime is 13921241. The reversal of 13921232 is 23212931.

13921232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 13921198 and 13921207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13921231) 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, 109553 + ... + 109679.

Almost surely, 2^13921232 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 13921232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15998976).

13921232 is an abundant number, since it is smaller than the sum of its proper divisors (18076720).

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

13921232 is a wasteful number, since it uses less digits than its factorization.

13921232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 190 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

The square root of 13921232 is about 3731.1167229129. The cubic root of 13921232 is about 240.5613710885.

The spelling of 13921232 in words is "thirteen million, nine hundred twenty-one thousand, two hundred thirty-two".