20104442440 has 32 divisors (see below), whose sum is σ = 45306740160. Its totient is φ = 8029022400.

The previous prime is 20104442429. The next prime is 20104442441. The reversal of 20104442440 is 4424440102.

It is not an unprimeable number, because it can be changed into a prime (20104442441) 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, 373026 + ... + 423505.

It is an arithmetic number, because the mean of its divisors is an integer number (1415835630).

Almost surely, 2^20104442440 is an apocalyptic number.

20104442440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20104442440 is an abundant number, since it is smaller than the sum of its proper divisors (25202297720).

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

20104442440 is a wasteful number, since it uses less digits than its factorization.

20104442440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797173 (or 797169 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 20104442440 its reverse (4424440102), we get a palindrome (24528882542).

The spelling of 20104442440 in words is "twenty billion, one hundred four million, four hundred forty-two thousand, four hundred forty".