13721252 has 12 divisors (see below), whose sum is σ = 24237360. Its totient is φ = 6796296.

The previous prime is 13721243. The next prime is 13721269. The reversal of 13721252 is 25212731.

It is a happy number.

13721252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15602 + ... + 16457.

It is an arithmetic number, because the mean of its divisors is an integer number (2019780).

Almost surely, 2^13721252 is an apocalyptic number.

It is an amenable number.

13721252 is a deficient number, since it is larger than the sum of its proper divisors (10516108).

13721252 is a wasteful number, since it uses less digits than its factorization.

13721252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32170 (or 32168 counting only the distinct ones).

The product of its digits is 840, while the sum is 23.

The square root of 13721252 is about 3704.2208357494. The cubic root of 13721252 is about 239.4039142516.

Adding to 13721252 its reverse (25212731), we get a palindrome (38933983).

The spelling of 13721252 in words is "thirteen million, seven hundred twenty-one thousand, two hundred fifty-two".