13691252 has 6 divisors (see below), whose sum is σ = 23959698. Its totient is φ = 6845624.

The previous prime is 13691213. The next prime is 13691269. The reversal of 13691252 is 25219631.

13691252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10719076 + 2972176 = 3274^2 + 1724^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1711403 + ... + 1711410.

It is an arithmetic number, because the mean of its divisors is an integer number (3993283).

Almost surely, 2^13691252 is an apocalyptic number.

It is an amenable number.

13691252 is a deficient number, since it is larger than the sum of its proper divisors (10268446).

13691252 is a wasteful number, since it uses less digits than its factorization.

13691252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3422817 (or 3422815 counting only the distinct ones).

The product of its digits is 3240, while the sum is 29.

The square root of 13691252 is about 3700.1691853211. The cubic root of 13691252 is about 239.2293102117.

The spelling of 13691252 in words is "thirteen million, six hundred ninety-one thousand, two hundred fifty-two".