816822344 has 32 divisors (see below), whose sum is σ = 1662366720. Its totient is φ = 374020416.

The previous prime is 816822343. The next prime is 816822361. The reversal of 816822344 is 443228618.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 816822298 and 816822307.

It is not an unprimeable number, because it can be changed into a prime (816822343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17714 + ... + 44129.

It is an arithmetic number, because the mean of its divisors is an integer number (51948960).

Almost surely, 2^816822344 is an apocalyptic number.

It is an amenable number.

816822344 is an abundant number, since it is smaller than the sum of its proper divisors (845544376).

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

816822344 is a wasteful number, since it uses less digits than its factorization.

816822344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61989 (or 61985 counting only the distinct ones).

The product of its digits is 73728, while the sum is 38.

The square root of 816822344 is about 28580.1039886142. The cubic root of 816822344 is about 934.7795505327.

The spelling of 816822344 in words is "eight hundred sixteen million, eight hundred twenty-two thousand, three hundred forty-four".