804890856 has 192 divisors, whose sum is σ = 2614740480. Its totient is φ = 204059520.

The previous prime is 804890843. The next prime is 804890873. The reversal of 804890856 is 658098408.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

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, 555525 + ... + 556971.

It is an arithmetic number, because the mean of its divisors is an integer number (13618440).

Almost surely, 2^804890856 is an apocalyptic number.

804890856 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 804890856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1307370240).

804890856 is an abundant number, since it is smaller than the sum of its proper divisors (1809849624).

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

804890856 is a wasteful number, since it uses less digits than its factorization.

804890856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524 (or 1513 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 48.

The square root of 804890856 is about 28370.5984427541. The cubic root of 804890856 is about 930.2057031394.

The spelling of 804890856 in words is "eight hundred four million, eight hundred ninety thousand, eight hundred fifty-six".