822040 has 16 divisors (see below), whose sum is σ = 1849680. Its totient is φ = 328800.

The previous prime is 822037. The next prime is 822049. The reversal of 822040 is 40228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10236 + ... + 10315.

It is an arithmetic number, because the mean of its divisors is an integer number (115605).

2⁸²²⁰⁴⁰ is an apocalyptic number.

It is an amenable number.

822040 is an abundant number, since it is smaller than the sum of its proper divisors (1027640).

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

822040 is a wasteful number, since it uses less digits than its factorization.

822040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20562 (or 20558 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 822040 is about 906.6642156830. The cubic root of 822040 is about 93.6765706499.

Adding to 822040 its reverse (40228), we get a palindrome (862268).

The spelling of 822040 in words is "eight hundred twenty-two thousand, forty".