804521886 has 96 divisors (see below), whose sum is σ = 1954160640. Its totient is φ = 219893184.

The previous prime is 804521869. The next prime is 804521891. The reversal of 804521886 is 688125408.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1082431 + ... + 1083173.

It is an arithmetic number, because the mean of its divisors is an integer number (20355840).

Almost surely, 2^804521886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 804521886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (977080320).

804521886 is an abundant number, since it is smaller than the sum of its proper divisors (1149638754).

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

804521886 is a wasteful number, since it uses less digits than its factorization.

804521886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918 (or 911 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 42.

The square root of 804521886 is about 28364.0950146484. The cubic root of 804521886 is about 930.0635428892.

The spelling of 804521886 in words is "eight hundred four million, five hundred twenty-one thousand, eight hundred eighty-six".