822776992 has 48 divisors (see below), whose sum is σ = 1670217192. Its totient is φ = 398684160.

The previous prime is 822776963. The next prime is 822777023. The reversal of 822776992 is 299677228.

It can be written as a sum of positive squares in 4 ways, for example, as 820478736 + 2298256 = 28644^2 + 1516^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331468 + ... + 333940.

Almost surely, 2^822776992 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 822776992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (835108596).

822776992 is an abundant number, since it is smaller than the sum of its proper divisors (847440200).

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

822776992 is a wasteful number, since it uses less digits than its factorization.

822776992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2801 (or 2793 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 52.

The square root of 822776992 is about 28684.0895271229. The cubic root of 822776992 is about 937.0455722856.

The spelling of 822776992 in words is "eight hundred twenty-two million, seven hundred seventy-six thousand, nine hundred ninety-two".