20004044440 has 32 divisors (see below), whose sum is σ = 45073370160. Its totient is φ = 7990192000.

The previous prime is 20004044321. The next prime is 20004044441. The reversal of 20004044440 is 4444040002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004044441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328666 + ... + 384745.

Almost surely, 2^20004044440 is an apocalyptic number.

20004044440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20004044440 is an abundant number, since it is smaller than the sum of its proper divisors (25069325720).

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

20004044440 is a wasteful number, since it uses less digits than its factorization.

20004044440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714123 (or 714119 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 20004044440 its reverse (4444040002), we get a palindrome (24448084442).

The spelling of 20004044440 in words is "twenty billion, four million, forty-four thousand, four hundred forty".