22428772808 has 36 divisors (see below), whose sum is σ = 45548891235. Its totient is φ = 10349199744.

The previous prime is 22428772783. The next prime is 22428772819. The reversal of 22428772808 is 80827782422.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 71944324 + 22356828484 = 8482^2 + 149522^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=105898.

It is a Duffinian number.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 5504660 + ... + 5508732.

Almost surely, 2^22428772808 is an apocalyptic number.

It is an amenable number.

22428772808 is an abundant number, since it is smaller than the sum of its proper divisors (23120118427).

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

22428772808 is an frugal number, since it uses more digits than its factorization.

22428772808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8178 (or 4088 counting only the distinct ones).

The product of its (nonzero) digits is 1605632, while the sum is 50.

Multiplying 22428772808 by its sum of digits (50), we get a square (1121438640400 = 1058980²).

The spelling of 22428772808 in words is "twenty-two billion, four hundred twenty-eight million, seven hundred seventy-two thousand, eight hundred eight".