822940 has 24 divisors (see below), whose sum is σ = 1804320. Its totient is φ = 314688.

The previous prime is 822907. The next prime is 822949. The reversal of 822940 is 49228.

822940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822949) by changing a digit.

822940 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 7 ways as a sum of consecutive naturals, for example, 435 + ... + 1354.

It is an arithmetic number, because the mean of its divisors is an integer number (75180).

2⁸²²⁹⁴⁰ is an apocalyptic number.

It is an amenable number.

822940 is an abundant number, since it is smaller than the sum of its proper divisors (981380).

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

822940 is a wasteful number, since it uses less digits than its factorization.

822940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821 (or 1819 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 822940 is about 907.1604047797. The cubic root of 822940 is about 93.7107450470.

The spelling of 822940 in words is "eight hundred twenty-two thousand, nine hundred forty".