22020040320 has 128 divisors (see below), whose sum is σ = 70236253440. Its totient is φ = 5868048384.

The previous prime is 22020040309. The next prime is 22020040321. The reversal of 22020040320 is 2304002022.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22020040320.

It is not an unprimeable number, because it can be changed into a prime (22020040321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3831369 + ... + 3837111.

It is an arithmetic number, because the mean of its divisors is an integer number (548720730).

Almost surely, 2^22020040320 is an apocalyptic number.

22020040320 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 22020040320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35118126720).

22020040320 is an abundant number, since it is smaller than the sum of its proper divisors (48216213120).

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

22020040320 is a wasteful number, since it uses less digits than its factorization.

22020040320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7762 (or 7750 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

Adding to 22020040320 its reverse (2304002022), we get a palindrome (24324042342).

The spelling of 22020040320 in words is "twenty-two billion, twenty million, forty thousand, three hundred twenty".