822408 has 16 divisors (see below), whose sum is σ = 2056080. Its totient is φ = 274128.

The previous prime is 822407. The next prime is 822431. The reversal of 822408 is 804228.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 34267 = 822408 / (8 + 2 + 2 + 4 + 0 + 8).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 822408.

It is not an unprimeable number, because it can be changed into a prime (822407) by changing a digit.

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, 17110 + ... + 17157.

It is an arithmetic number, because the mean of its divisors is an integer number (128505).

2⁸²²⁴⁰⁸ is an apocalyptic number.

It is an amenable number.

822408 is an abundant number, since it is smaller than the sum of its proper divisors (1233672).

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

822408 is a wasteful number, since it uses less digits than its factorization.

822408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34276 (or 34272 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 822408 is about 906.8671347006. The cubic root of 822408 is about 93.6905471941.

The spelling of 822408 in words is "eight hundred twenty-two thousand, four hundred eight".