800855800 has 24 divisors (see below), whose sum is σ = 1861990200. Its totient is φ = 320342240.

The previous prime is 800855761. The next prime is 800855801. The reversal of 800855800 is 8558008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800855801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2001940 + ... + 2002339.

It is an arithmetic number, because the mean of its divisors is an integer number (77582925).

Almost surely, 2^800855800 is an apocalyptic number.

It is an amenable number.

800855800 is an abundant number, since it is smaller than the sum of its proper divisors (1061134400).

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

800855800 is a wasteful number, since it uses less digits than its factorization.

800855800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4004295 (or 4004286 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 34.

The square root of 800855800 is about 28299.3957532665. The cubic root of 800855800 is about 928.6486713991.

The spelling of 800855800 in words is "eight hundred million, eight hundred fifty-five thousand, eight hundred".