22320871920 has 320 divisors, whose sum is σ = 78590505600. Its totient is φ = 5894332416.

The previous prime is 22320871901. The next prime is 22320871921. The reversal of 22320871920 is 2917802322.

It is a super-3 number, since 3×22320871920³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22320871921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19769916 + ... + 19771044.

It is an arithmetic number, because the mean of its divisors is an integer number (245595330).

Almost surely, 2^22320871920 is an apocalyptic number.

22320871920 is a gapful number since it is divisible by the number (20) 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 22320871920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39295252800).

22320871920 is an abundant number, since it is smaller than the sum of its proper divisors (56269633680).

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

22320871920 is a wasteful number, since it uses less digits than its factorization.

22320871920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276 (or 1252 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 22320871920 in words is "twenty-two billion, three hundred twenty million, eight hundred seventy-one thousand, nine hundred twenty".