822322720 has 24 divisors (see below), whose sum is σ = 1942737804. Its totient is φ = 328929024.

The previous prime is 822322693. The next prime is 822322727. The reversal of 822322720 is 27223228.

It can be written as a sum of positive squares in 2 ways, for example, as 754491024 + 67831696 = 27468^2 + 8236^2 .

It is not an unprimeable number, because it can be changed into a prime (822322727) 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, 2569599 + ... + 2569918.

Almost surely, 2^822322720 is an apocalyptic number.

822322720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

822322720 is an abundant number, since it is smaller than the sum of its proper divisors (1120415084).

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

822322720 is a wasteful number, since it uses less digits than its factorization.

822322720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5139532 (or 5139524 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 822322720 is about 28676.1698976694. The cubic root of 822322720 is about 936.8730865308.

Adding to 822322720 its reverse (27223228), we get a palindrome (849545948).

The spelling of 822322720 in words is "eight hundred twenty-two million, three hundred twenty-two thousand, seven hundred twenty".