20444203230 has 128 divisors (see below), whose sum is σ = 57227129856. Its totient is φ = 4619212800.

The previous prime is 20444203229. The next prime is 20444203231. The reversal of 20444203230 is 3230244402.

It is an interprime number because it is at equal distance from previous prime (20444203229) and next prime (20444203231).

It is a self number, because there is not a number n which added to its sum of digits gives 20444203230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20444203231) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 560140 + ... + 595520.

It is an arithmetic number, because the mean of its divisors is an integer number (447086952).

Almost surely, 2^20444203230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20444203230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28613564928).

20444203230 is an abundant number, since it is smaller than the sum of its proper divisors (36782926626).

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

20444203230 is a wasteful number, since it uses less digits than its factorization.

20444203230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35522.

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

Adding to 20444203230 its reverse (3230244402), we get a palindrome (23674447632).

The spelling of 20444203230 in words is "twenty billion, four hundred forty-four million, two hundred three thousand, two hundred thirty".