22244340630 has 64 divisors (see below), whose sum is σ = 56444117760. Its totient is φ = 5594834304.

The previous prime is 22244340619. The next prime is 22244340661. The reversal of 22244340630 is 3604344222.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 43432 + ... + 215348.

It is an arithmetic number, because the mean of its divisors is an integer number (881939340).

Almost surely, 2^22244340630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22244340630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28222058880).

22244340630 is an abundant number, since it is smaller than the sum of its proper divisors (34199777130).

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

22244340630 is a wasteful number, since it uses less digits than its factorization.

22244340630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172173.

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 22244340630 its reverse (3604344222), we get a palindrome (25848684852).

The spelling of 22244340630 in words is "twenty-two billion, two hundred forty-four million, three hundred forty thousand, six hundred thirty".