812922 has 32 divisors (see below), whose sum is σ = 1805760. Its totient is φ = 241920.

The previous prime is 812921. The next prime is 812939. The reversal of 812922 is 229218.

It is a junction number, because it is equal to n+sod(n) for n = 812892 and 812901.

It is not an unprimeable number, because it can be changed into a prime (812921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7138 + ... + 7250.

It is an arithmetic number, because the mean of its divisors is an integer number (56430).

2⁸¹²⁹²² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 812922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (902880).

812922 is an abundant number, since it is smaller than the sum of its proper divisors (992838).

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

812922 is a wasteful number, since it uses less digits than its factorization.

812922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238.

The product of its digits is 576, while the sum is 24.

The square root of 812922 is about 901.6218719619. The cubic root of 812922 is about 93.3289311983.

It can be divided in two parts, 81 and 2922, that added together give a palindrome (3003).

The spelling of 812922 in words is "eight hundred twelve thousand, nine hundred twenty-two".