13191426 has 24 divisors (see below), whose sum is σ = 28648620. Its totient is φ = 4386816.

The previous prime is 13191421. The next prime is 13191449. The reversal of 13191426 is 62419131.

It can be written as a sum of positive squares in 2 ways, for example, as 13068225 + 123201 = 3615^2 + 351^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13191426.

It is not an unprimeable number, because it can be changed into a prime (13191421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13366 + ... + 14318.

Almost surely, 2^13191426 is an apocalyptic number.

13191426 is an abundant number, since it is smaller than the sum of its proper divisors (15457194).

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

13191426 is a wasteful number, since it uses less digits than its factorization.

13191426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730 (or 1727 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 13191426 is about 3632.0002753304. Note that the first 3 decimals coincide. The cubic root of 13191426 is about 236.2819693027.

The spelling of 13191426 in words is "thirteen million, one hundred ninety-one thousand, four hundred twenty-six".