13213868 has 12 divisors (see below), whose sum is σ = 24129840. Its totient is φ = 6319632.

The previous prime is 13213867. The next prime is 13213901. The reversal of 13213868 is 86831231.

It is a happy number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13213867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71723 + ... + 71906.

It is an arithmetic number, because the mean of its divisors is an integer number (2010820).

Almost surely, 2^13213868 is an apocalyptic number.

It is an amenable number.

13213868 is a deficient number, since it is larger than the sum of its proper divisors (10915972).

13213868 is a wasteful number, since it uses less digits than its factorization.

13213868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143656 (or 143654 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 13213868 is about 3635.0884445911. The cubic root of 13213868 is about 236.4158854728.

The spelling of 13213868 in words is "thirteen million, two hundred thirteen thousand, eight hundred sixty-eight".