12806804 has 12 divisors (see below), whose sum is σ = 22555764. Its totient is φ = 6362304.

The previous prime is 12806749. The next prime is 12806861. The reversal of 12806804 is 40860821.

It can be written as a sum of positive squares in 2 ways, for example, as 5299204 + 7507600 = 2302^2 + 2740^2 .

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 3 ways as a sum of consecutive naturals, for example, 9569 + ... + 10824.

It is an arithmetic number, because the mean of its divisors is an integer number (1879647).

Almost surely, 2^12806804 is an apocalyptic number.

It is an amenable number.

12806804 is a deficient number, since it is larger than the sum of its proper divisors (9748960).

12806804 is a wasteful number, since it uses less digits than its factorization.

12806804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20554 (or 20552 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 12806804 is about 3578.6595255766. The cubic root of 12806804 is about 233.9628596666.

The spelling of 12806804 in words is "twelve million, eight hundred six thousand, eight hundred four".