20444023320 has 64 divisors (see below), whose sum is σ = 70093797120. Its totient is φ = 4672919424.

The previous prime is 20444023307. The next prime is 20444023429. The reversal of 20444023320 is 2332044402.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 12168222 + ... + 12169901.

It is an arithmetic number, because the mean of its divisors is an integer number (1095215580).

Almost surely, 2^20444023320 is an apocalyptic number.

20444023320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20444023320 is an abundant number, since it is smaller than the sum of its proper divisors (49649773800).

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

20444023320 is a wasteful number, since it uses less digits than its factorization.

20444023320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24338144 (or 24338140 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 20444023320 its reverse (2332044402), we get a palindrome (22776067722).

The spelling of 20444023320 in words is "twenty billion, four hundred forty-four million, twenty-three thousand, three hundred twenty".