12811804 has 24 divisors (see below), whose sum is σ = 23289728. Its totient is φ = 6160320.

The previous prime is 12811789. The next prime is 12811811. The reversal of 12811804 is 40811821.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 34162 + ... + 34534.

Almost surely, 2^12811804 is an apocalyptic number.

It is an amenable number.

12811804 is a deficient number, since it is larger than the sum of its proper divisors (10477924).

12811804 is a wasteful number, since it uses less digits than its factorization.

12811804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685 (or 683 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 12811804 is about 3579.3580430016. The cubic root of 12811804 is about 233.9933034341.

The spelling of 12811804 in words is "twelve million, eight hundred eleven thousand, eight hundred four".