850819056 has 80 divisors (see below), whose sum is σ = 2296519680. Its totient is φ = 271151040.

The previous prime is 850818989. The next prime is 850819091. The reversal of 850819056 is 650918058.

It is a super-2 number, since 2×850819056² = 1447786132105462272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 850818999 and 850819017.

It is a congruent number.

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, 10250791 + ... + 10250873.

It is an arithmetic number, because the mean of its divisors is an integer number (28706496).

Almost surely, 2^850819056 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 850819056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1148259840).

850819056 is an abundant number, since it is smaller than the sum of its proper divisors (1445700624).

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

850819056 is an frugal number, since it uses more digits than its factorization.

850819056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 42.

The square root of 850819056 is about 29168.8027865389. The cubic root of 850819056 is about 947.5724005819.

The spelling of 850819056 in words is "eight hundred fifty million, eight hundred nineteen thousand, fifty-six".