13391286 has 8 divisors (see below), whose sum is σ = 26782584. Its totient is φ = 4463760.

The previous prime is 13391251. The next prime is 13391293. The reversal of 13391286 is 68219331.

It is a sphenic number, since it is the product of 3 distinct primes.

13391286 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1115935 + ... + 1115946.

It is an arithmetic number, because the mean of its divisors is an integer number (3347823).

Almost surely, 2^13391286 is an apocalyptic number.

13391286 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13391286 is a wasteful number, since it uses less digits than its factorization.

13391286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231886.

The product of its digits is 7776, while the sum is 33.

The square root of 13391286 is about 3659.4106082811. The cubic root of 13391286 is about 237.4692761734.

It can be divided in two parts, 133 and 91286, that added together give a palindrome (91419).

The spelling of 13391286 in words is "thirteen million, three hundred ninety-one thousand, two hundred eighty-six".