8422635520 has 288 divisors, whose sum is σ = 22733343360. Its totient is φ = 2990407680.

The previous prime is 8422635509. The next prime is 8422635523. The reversal of 8422635520 is 255362248.

It is a self number, because there is not a number n which added to its sum of digits gives 8422635520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8422635523) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 53647282 + ... + 53647438.

It is an arithmetic number, because the mean of its divisors is an integer number (78935220).

Almost surely, 2^8422635520 is an apocalyptic number.

8422635520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8422635520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11366671680).

8422635520 is an abundant number, since it is smaller than the sum of its proper divisors (14310707840).

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

8422635520 is a wasteful number, since it uses less digits than its factorization.

8422635520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The square root of 8422635520 is about 91774.9177063101. The cubic root of 8422635520 is about 2034.6170013725.

Adding to 8422635520 its reverse (255362248), we get a palindrome (8677997768).

It can be divided in two parts, 842 and 2635520, that added together give a palindrome (2636362).

The spelling of 8422635520 in words is "eight billion, four hundred twenty-two million, six hundred thirty-five thousand, five hundred twenty".