22244406128 has 160 divisors (see below), whose sum is σ = 52882329600. Its totient is φ = 9048049920.

The previous prime is 22244406113. The next prime is 22244406157. The reversal of 22244406128 is 82160444222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9015551 + ... + 9018017.

It is an arithmetic number, because the mean of its divisors is an integer number (330514560).

Almost surely, 2^22244406128 is an apocalyptic number.

22244406128 is a gapful number since it is divisible by the number (28) 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 22244406128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26441164800).

22244406128 is an abundant number, since it is smaller than the sum of its proper divisors (30637923472).

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

22244406128 is a wasteful number, since it uses less digits than its factorization.

22244406128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2580 (or 2560 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 35.

The spelling of 22244406128 in words is "twenty-two billion, two hundred forty-four million, four hundred six thousand, one hundred twenty-eight".