8021808 has 80 divisors (see below), whose sum is σ = 23808000. Its totient is φ = 2583360.

The previous prime is 8021801. The next prime is 8021821. The reversal of 8021808 is 8081208.

8021808 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (8021801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13093 + ... + 13691.

It is an arithmetic number, because the mean of its divisors is an integer number (297600).

Almost surely, 2^8021808 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 8021808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11904000).

8021808 is an abundant number, since it is smaller than the sum of its proper divisors (15786192).

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

8021808 is a wasteful number, since it uses less digits than its factorization.

8021808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 8021808 is about 2832.2796472100. The cubic root of 8021808 is about 200.1815684479.

The spelling of 8021808 in words is "eight million, twenty-one thousand, eight hundred eight".