800881000 has 64 divisors (see below), whose sum is σ = 1878252480. Its totient is φ = 319636800.

The previous prime is 800880991. The next prime is 800881051. The reversal of 800881000 is 188008.

It is a happy number.

It is a super-2 number, since 2×800881000² = 1282820752322000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 882547 + ... + 883453.

It is an arithmetic number, because the mean of its divisors is an integer number (29347695).

Almost surely, 2^800881000 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 800881000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (939126240).

800881000 is an abundant number, since it is smaller than the sum of its proper divisors (1077371480).

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

800881000 is a wasteful number, since it uses less digits than its factorization.

800881000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811 (or 1797 counting only the distinct ones).

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

The square root of 800881000 is about 28299.8409889526. The cubic root of 800881000 is about 928.6584116883.

The spelling of 800881000 in words is "eight hundred million, eight hundred eighty-one thousand".