20424440404 has 48 divisors (see below), whose sum is σ = 37997568000. Its totient is φ = 9585281376.

The previous prime is 20424440371. The next prime is 20424440419. The reversal of 20424440404 is 40404442402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3291697 + ... + 3297895.

It is an arithmetic number, because the mean of its divisors is an integer number (791616000).

Almost surely, 2^20424440404 is an apocalyptic number.

It is an amenable number.

20424440404 is a deficient number, since it is larger than the sum of its proper divisors (17573127596).

20424440404 is a wasteful number, since it uses less digits than its factorization.

20424440404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6892 (or 6890 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 20424440404 its reverse (40404442402), we get a palindrome (60828882806).

The spelling of 20424440404 in words is "twenty billion, four hundred twenty-four million, four hundred forty thousand, four hundred four".