822222040 has 16 divisors (see below), whose sum is σ = 1849999680. Its totient is φ = 328888800.

The previous prime is 822221999. The next prime is 822222043. The reversal of 822222040 is 40222228.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822222043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10277736 + ... + 10277815.

It is an arithmetic number, because the mean of its divisors is an integer number (115624980).

Almost surely, 2^822222040 is an apocalyptic number.

It is an amenable number.

822222040 is an abundant number, since it is smaller than the sum of its proper divisors (1027777640).

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

822222040 is a wasteful number, since it uses less digits than its factorization.

822222040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20555562 (or 20555558 counting only the distinct ones).

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

The square root of 822222040 is about 28674.4143793731. The cubic root of 822222040 is about 936.8348500292.

Adding to 822222040 its reverse (40222228), we get a palindrome (862444268).

The spelling of 822222040 in words is "eight hundred twenty-two million, two hundred twenty-two thousand, forty".