822912 has 32 divisors (see below), whose sum is σ = 2186880. Its totient is φ = 274176.

The previous prime is 822907. The next prime is 822949. The reversal of 822912 is 219228.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688 + ... + 1455.

It is an arithmetic number, because the mean of its divisors is an integer number (68340).

2⁸²²⁹¹² is an apocalyptic number.

It is an amenable number.

822912 is an abundant number, since it is smaller than the sum of its proper divisors (1363968).

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

822912 is a wasteful number, since it uses less digits than its factorization.

822912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160 (or 2148 counting only the distinct ones).

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

The square root of 822912 is about 907.1449718761. The cubic root of 822912 is about 93.7096822191.

The spelling of 822912 in words is "eight hundred twenty-two thousand, nine hundred twelve".