20044004020 has 48 divisors (see below), whose sum is σ = 46914154560. Its totient is φ = 7148818944.

The previous prime is 20044004011. The next prime is 20044004021. The reversal of 20044004020 is 2040044002.

It is a junction number, because it is equal to n+sod(n) for n = 20044003985 and 20044004003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20044004021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1544934 + ... + 1557853.

It is an arithmetic number, because the mean of its divisors is an integer number (977378220).

Almost surely, 2^20044004020 is an apocalyptic number.

20044004020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20044004020 is an abundant number, since it is smaller than the sum of its proper divisors (26870150540).

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

20044004020 is a wasteful number, since it uses less digits than its factorization.

20044004020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3102832 (or 3102830 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 20044004020 its reverse (2040044002), we get a palindrome (22084048022).

The spelling of 20044004020 in words is "twenty billion, forty-four million, four thousand, twenty".