20444044420 has 24 divisors (see below), whose sum is σ = 43054129944. Its totient is φ = 8154448896.

The previous prime is 20444044333. The next prime is 20444044429. The reversal of 20444044420 is 2444044402.

It can be written as a sum of positive squares in 4 ways, for example, as 1484406784 + 18959637636 = 38528^2 + 137694^2 .

It is not an unprimeable number, because it can be changed into a prime (20444044429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1440819 + ... + 1454938.

It is an arithmetic number, because the mean of its divisors is an integer number (1793922081).

Almost surely, 2^20444044420 is an apocalyptic number.

20444044420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20444044420 is an abundant number, since it is smaller than the sum of its proper divisors (22610085524).

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

20444044420 is a wasteful number, since it uses less digits than its factorization.

20444044420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2896119 (or 2896117 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 20444044420 its reverse (2444044402), we get a palindrome (22888088822).

The spelling of 20444044420 in words is "twenty billion, four hundred forty-four million, forty-four thousand, four hundred twenty".