813808 has 20 divisors (see below), whose sum is σ = 1660360. Its totient is φ = 385344.

The previous prime is 813797. The next prime is 813811. The reversal of 813808 is 808318.

813808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 15.

It is a zygodrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1035 + ... + 1642.

It is an arithmetic number, because the mean of its divisors is an integer number (83018).

2⁸¹³⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

813808 is an abundant number, since it is smaller than the sum of its proper divisors (846552).

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

813808 is a wasteful number, since it uses less digits than its factorization.

813808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2704 (or 2698 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 813808 is about 902.1130749524. The cubic root of 813808 is about 93.3628251472.

The spelling of 813808 in words is "eight hundred thirteen thousand, eight hundred eight".