22706811820 has 96 divisors (see below), whose sum is σ = 59593476096. Its totient is φ = 7060435200.

The previous prime is 22706811797. The next prime is 22706811823. The reversal of 22706811820 is 2811860722.

It is a self number, because there is not a number n which added to its sum of digits gives 22706811820.

It is not an unprimeable number, because it can be changed into a prime (22706811823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 630829 + ... + 665851.

It is an arithmetic number, because the mean of its divisors is an integer number (620765376).

Almost surely, 2^22706811820 is an apocalyptic number.

22706811820 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 22706811820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29796738048).

22706811820 is an abundant number, since it is smaller than the sum of its proper divisors (36886664276).

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

22706811820 is a wasteful number, since it uses less digits than its factorization.

22706811820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35471 (or 35469 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 37.

The spelling of 22706811820 in words is "twenty-two billion, seven hundred six million, eight hundred eleven thousand, eight hundred twenty".