822438 has 12 divisors (see below), whose sum is σ = 1781988. Its totient is φ = 274140.

The previous prime is 822433. The next prime is 822517. The reversal of 822438 is 834228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822431) by changing a digit.

822438 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22828 + ... + 22863.

It is an arithmetic number, because the mean of its divisors is an integer number (148499).

2⁸²²⁴³⁸ is an apocalyptic number.

822438 is an abundant number, since it is smaller than the sum of its proper divisors (959550).

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

822438 is a wasteful number, since it uses less digits than its factorization.

822438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45699 (or 45696 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 822438 is about 906.8836750102. The cubic root of 822438 is about 93.6916864024.

The spelling of 822438 in words is "eight hundred twenty-two thousand, four hundred thirty-eight".