12809626 has 8 divisors (see below), whose sum is σ = 19412820. Its totient is φ = 6338688.

The previous prime is 12809611. The next prime is 12809627. The reversal of 12809626 is 62690821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11122225 + 1687401 = 3335^2 + 1299^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12809591 and 12809600.

It is not an unprimeable number, because it can be changed into a prime (12809627) by changing a digit.

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, 32821 + ... + 33208.

Almost surely, 2^12809626 is an apocalyptic number.

12809626 is a deficient number, since it is larger than the sum of its proper divisors (6603194).

12809626 is an equidigital number, since it uses as much as digits as its factorization.

12809626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66128.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 12809626 is about 3579.0537855696. The cubic root of 12809626 is about 233.9800431028.

The spelling of 12809626 in words is "twelve million, eight hundred nine thousand, six hundred twenty-six".