13426786 has 4 divisors (see below), whose sum is σ = 20140182. Its totient is φ = 6713392.

The previous prime is 13426783. The next prime is 13426801. The reversal of 13426786 is 68762431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8520561 + 4906225 = 2919^2 + 2215^2 .

It is not an unprimeable number, because it can be changed into a prime (13426783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3356695 + ... + 3356698.

Almost surely, 2^13426786 is an apocalyptic number.

13426786 is a deficient number, since it is larger than the sum of its proper divisors (6713396).

13426786 is an equidigital number, since it uses as much as digits as its factorization.

13426786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6713395.

The product of its digits is 48384, while the sum is 37.

The square root of 13426786 is about 3664.2579057703. The cubic root of 13426786 is about 237.6789329324.

It can be divided in two parts, 1342 and 6786, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 13426786 in words is "thirteen million, four hundred twenty-six thousand, seven hundred eighty-six".