22020000040 has 64 divisors (see below), whose sum is σ = 52752772800. Its totient is φ = 8243524608.

The previous prime is 22020000017. The next prime is 22020000043. The reversal of 22020000040 is 4000002022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 22019999981 and 22020000026.

It is not an unprimeable number, because it can be changed into a prime (22020000043) 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, 31267 + ... + 212173.

It is an arithmetic number, because the mean of its divisors is an integer number (824262075).

Almost surely, 2^22020000040 is an apocalyptic number.

22020000040 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 22020000040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26376386400).

22020000040 is an abundant number, since it is smaller than the sum of its proper divisors (30732772760).

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

22020000040 is a wasteful number, since it uses less digits than its factorization.

22020000040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181114 (or 181110 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

Adding to 22020000040 its reverse (4000002022), we get a palindrome (26020002062).

The spelling of 22020000040 in words is "twenty-two billion, twenty million, forty", and thus it is an aban number and an uban number.