12813808 has 40 divisors (see below), whose sum is σ = 28569600. Its totient is φ = 5453760.

The previous prime is 12813791. The next prime is 12813833. The reversal of 12813808 is 80831821.

It is a self number, because there is not a number n which added to its sum of digits gives 12813808.

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, 21093 + ... + 21691.

It is an arithmetic number, because the mean of its divisors is an integer number (714240).

Almost surely, 2^12813808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12813808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14284800).

12813808 is an abundant number, since it is smaller than the sum of its proper divisors (15755792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12813808 is a wasteful number, since it uses less digits than its factorization.

12813808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805 (or 799 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 12813808 is about 3579.6379705216. The cubic root of 12813808 is about 234.0055030727.

The spelling of 12813808 in words is "twelve million, eight hundred thirteen thousand, eight hundred eight".