13215286 has 16 divisors (see below), whose sum is σ = 22821120. Its totient is φ = 5622120.

The previous prime is 13215277. The next prime is 13215287. The reversal of 13215286 is 68251231.

13215286 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13215287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1450 + ... + 5341.

It is an arithmetic number, because the mean of its divisors is an integer number (1426320).

Almost surely, 2^13215286 is an apocalyptic number.

13215286 is a deficient number, since it is larger than the sum of its proper divisors (9605834).

13215286 is a wasteful number, since it uses less digits than its factorization.

13215286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6939.

The product of its digits is 2880, while the sum is 28.

The square root of 13215286 is about 3635.2834827562. The cubic root of 13215286 is about 236.4243418847.

The spelling of 13215286 in words is "thirteen million, two hundred fifteen thousand, two hundred eighty-six".