20004446004 has 12 divisors (see below), whose sum is σ = 46677040704. Its totient is φ = 6668148664.

The previous prime is 20004446003. The next prime is 20004446047. The reversal of 20004446004 is 40064440002.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004446003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 833518572 + ... + 833518595.

It is an arithmetic number, because the mean of its divisors is an integer number (3889753392).

Almost surely, 2^20004446004 is an apocalyptic number.

It is an amenable number.

20004446004 is an abundant number, since it is smaller than the sum of its proper divisors (26672594700).

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

20004446004 is a wasteful number, since it uses less digits than its factorization.

20004446004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667037174 (or 1667037172 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20004446004 its reverse (40064440002), we get a palindrome (60068886006).

The spelling of 20004446004 in words is "twenty billion, four million, four hundred forty-six thousand, four".