822312020 has 24 divisors (see below), whose sum is σ = 1817743200. Its totient is φ = 311612832.

The previous prime is 822312019. The next prime is 822312037. The reversal of 822312020 is 20213228.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 822311983 and 822312001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1081610 + ... + 1082369.

It is an arithmetic number, because the mean of its divisors is an integer number (75739300).

Almost surely, 2^822312020 is an apocalyptic number.

It is an amenable number.

822312020 is an abundant number, since it is smaller than the sum of its proper divisors (995431180).

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

822312020 is a wasteful number, since it uses less digits than its factorization.

822312020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2164007 (or 2164005 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 822312020 is about 28675.9833310037. The cubic root of 822312020 is about 936.8690230064.

Adding to 822312020 its reverse (20213228), we get a palindrome (842525248).

The spelling of 822312020 in words is "eight hundred twenty-two million, three hundred twelve thousand, twenty".