822424 has 16 divisors (see below), whose sum is σ = 1552320. Its totient is φ = 408480.

The previous prime is 822407. The next prime is 822431. The reversal of 822424 is 424228.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 822395 and 822404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1554 + ... + 2014.

It is an arithmetic number, because the mean of its divisors is an integer number (97020).

2⁸²²⁴²⁴ is an apocalyptic number.

It is an amenable number.

822424 is a deficient number, since it is larger than the sum of its proper divisors (729896).

822424 is a wasteful number, since it uses less digits than its factorization.

822424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690 (or 686 counting only the distinct ones).

The product of its digits is 1024, while the sum is 22.

The square root of 822424 is about 906.8759562366. The cubic root of 822424 is about 93.6911547753.

The spelling of 822424 in words is "eight hundred twenty-two thousand, four hundred twenty-four".