22917720960 has 768 divisors, whose sum is σ = 89552736000. Its totient is φ = 5522743296.

The previous prime is 22917720887. The next prime is 22917720967. The reversal of 22917720960 is 6902771922.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22917720967) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 276117079 + ... + 276117161.

It is an arithmetic number, because the mean of its divisors is an integer number (116605125).

Almost surely, 2^22917720960 is an apocalyptic number.

22917720960 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 22917720960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44776368000).

22917720960 is an abundant number, since it is smaller than the sum of its proper divisors (66635015040).

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

22917720960 is a wasteful number, since it uses less digits than its factorization.

22917720960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The spelling of 22917720960 in words is "twenty-two billion, nine hundred seventeen million, seven hundred twenty thousand, nine hundred sixty".