12397826 has 16 divisors (see below), whose sum is σ = 21772800. Its totient is φ = 5183520.

The previous prime is 12397817. The next prime is 12397829. The reversal of 12397826 is 62879321.

It is a self number, because there is not a number n which added to its sum of digits gives 12397826.

It is not an unprimeable number, because it can be changed into a prime (12397829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10226 + ... + 11373.

It is an arithmetic number, because the mean of its divisors is an integer number (1360800).

Almost surely, 2^12397826 is an apocalyptic number.

12397826 is a deficient number, since it is larger than the sum of its proper divisors (9374974).

12397826 is a wasteful number, since it uses less digits than its factorization.

12397826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21649.

The product of its digits is 36288, while the sum is 38.

The square root of 12397826 is about 3521.0546715437. The cubic root of 12397826 is about 231.4453780045.

The spelling of 12397826 in words is "twelve million, three hundred ninety-seven thousand, eight hundred twenty-six".