822108640 has 24 divisors (see below), whose sum is σ = 1942232040. Its totient is φ = 328843392.

The previous prime is 822108613. The next prime is 822108647. The reversal of 822108640 is 46801228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822108647) 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, 2568930 + ... + 2569249.

It is an arithmetic number, because the mean of its divisors is an integer number (80926335).

Almost surely, 2^822108640 is an apocalyptic number.

822108640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

822108640 is an abundant number, since it is smaller than the sum of its proper divisors (1120123400).

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

822108640 is a wasteful number, since it uses less digits than its factorization.

822108640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5138194 (or 5138186 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 822108640 is about 28672.4369386350. The cubic root of 822108640 is about 936.7917789562.

Adding to 822108640 its reverse (46801228), we get a palindrome (868909868).

The spelling of 822108640 in words is "eight hundred twenty-two million, one hundred eight thousand, six hundred forty".