13215868 has 48 divisors (see below), whose sum is σ = 26399520. Its totient is φ = 5750784.

The previous prime is 13215859. The next prime is 13215871. The reversal of 13215868 is 86851231.

13215868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68380 + ... + 68572.

It is an arithmetic number, because the mean of its divisors is an integer number (549990).

Almost surely, 2^13215868 is an apocalyptic number.

It is an amenable number.

13215868 is a deficient number, since it is larger than the sum of its proper divisors (13183652).

13215868 is a wasteful number, since it uses less digits than its factorization.

13215868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 284 counting only the distinct ones).

The product of its digits is 11520, while the sum is 34.

The square root of 13215868 is about 3635.3635306527. The cubic root of 13215868 is about 236.4278125360.

The spelling of 13215868 in words is "thirteen million, two hundred fifteen thousand, eight hundred sixty-eight".