20444242432 has 40 divisors (see below), whose sum is σ = 43251429276. Its totient is φ = 9620815872.

The previous prime is 20444242411. The next prime is 20444242447. The reversal of 20444242432 is 23424244402.

It can be written as a sum of positive squares in 2 ways, for example, as 18674862336 + 1769380096 = 136656^2 + 42064^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20444242394 and 20444242403.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1165713 + ... + 1183120.

Almost surely, 2^20444242432 is an apocalyptic number.

It is an amenable number.

20444242432 is an abundant number, since it is smaller than the sum of its proper divisors (22807186844).

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

20444242432 is an equidigital number, since it uses as much as digits as its factorization.

20444242432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348868 (or 2348852 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 31.

Adding to 20444242432 its reverse (23424244402), we get a palindrome (43868486834).

The spelling of 20444242432 in words is "twenty billion, four hundred forty-four million, two hundred forty-two thousand, four hundred thirty-two".