22744442880 has 144 divisors (see below), whose sum is σ = 78828471540. Its totient is φ = 6065160192.

The previous prime is 22744442867. The next prime is 22744442881. The reversal of 22744442880 is 8824444722.

It can be written as a sum of positive squares in 2 ways, for example, as 22341878784 + 402564096 = 149472^2 + 20064^2 .

It is a tau number, because it is divible by the number of its divisors (144).

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

It is not an unprimeable number, because it can be changed into a prime (22744442881) 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 11 ways as a sum of consecutive naturals, for example, 31237 + ... + 215556.

Almost surely, 2^22744442880 is an apocalyptic number.

22744442880 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 22744442880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39414235770).

22744442880 is an abundant number, since it is smaller than the sum of its proper divisors (56084028660).

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

22744442880 is a wasteful number, since it uses less digits than its factorization.

22744442880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246826 (or 246803 counting only the distinct ones).

The product of its (nonzero) digits is 917504, while the sum is 45.

The spelling of 22744442880 in words is "twenty-two billion, seven hundred forty-four million, four hundred forty-two thousand, eight hundred eighty".