12886838 has 16 divisors (see below), whose sum is σ = 19690944. Its totient is φ = 6324480.

The previous prime is 12886781. The next prime is 12886843. The reversal of 12886838 is 83868821.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 34931 + ... + 35297.

It is an arithmetic number, because the mean of its divisors is an integer number (1230684).

Almost surely, 2^12886838 is an apocalyptic number.

12886838 is a deficient number, since it is larger than the sum of its proper divisors (6804106).

12886838 is a wasteful number, since it uses less digits than its factorization.

12886838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647.

The product of its digits is 147456, while the sum is 44.

The square root of 12886838 is about 3589.8242296803. The cubic root of 12886838 is about 234.4492186402.

It can be divided in two parts, 128868 and 38, that multiplied together give a palindrome (4896984).

The spelling of 12886838 in words is "twelve million, eight hundred eighty-six thousand, eight hundred thirty-eight".