13261286 has 16 divisors (see below), whose sum is σ = 20856528. Its totient is φ = 6316800.

The previous prime is 13261277. The next prime is 13261291. The reversal of 13261286 is 68216231.

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 7 ways as a sum of consecutive naturals, for example, 1646 + ... + 5406.

It is an arithmetic number, because the mean of its divisors is an integer number (1303533).

Almost surely, 2^13261286 is an apocalyptic number.

13261286 is a deficient number, since it is larger than the sum of its proper divisors (7595242).

13261286 is a wasteful number, since it uses less digits than its factorization.

13261286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3847.

The product of its digits is 3456, while the sum is 29.

The square root of 13261286 is about 3641.6048659897. The cubic root of 13261286 is about 236.6983408862.

The spelling of 13261286 in words is "thirteen million, two hundred sixty-one thousand, two hundred eighty-six".