812276322 has 64 divisors (see below), whose sum is σ = 1970196480. Its totient is φ = 219873600.

The previous prime is 812276293. The next prime is 812276323. The reversal of 812276322 is 223672218.

It is a super-3 number, since 3×812276322³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (812276323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11329 + ... + 41867.

It is an arithmetic number, because the mean of its divisors is an integer number (30784320).

Almost surely, 2^812276322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 812276322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (985098240).

812276322 is an abundant number, since it is smaller than the sum of its proper divisors (1157920158).

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

812276322 is a wasteful number, since it uses less digits than its factorization.

812276322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30599.

The product of its digits is 16128, while the sum is 33.

The square root of 812276322 is about 28500.4617857325. The cubic root of 812276322 is about 933.0421525627.

The spelling of 812276322 in words is "eight hundred twelve million, two hundred seventy-six thousand, three hundred twenty-two".