20444308228 has 12 divisors (see below), whose sum is σ = 35899649100. Its totient is φ = 10187265632.

The previous prime is 20444308223. The next prime is 20444308231. The reversal of 20444308228 is 82280344402.

It can be written as a sum of positive squares in 2 ways, for example, as 16607992384 + 3836315844 = 128872^2 + 61938^2 .

It is not an unprimeable number, because it can be changed into a prime (20444308223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8720803 + ... + 8723146.

It is an arithmetic number, because the mean of its divisors is an integer number (2991637425).

Almost surely, 2^20444308228 is an apocalyptic number.

It is an amenable number.

20444308228 is a deficient number, since it is larger than the sum of its proper divisors (15455340872).

20444308228 is a wasteful number, since it uses less digits than its factorization.

20444308228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17444246 (or 17444244 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 37.

The spelling of 20444308228 in words is "twenty billion, four hundred forty-four million, three hundred eight thousand, two hundred twenty-eight".