20424442404 has 12 divisors (see below), whose sum is σ = 47657032304. Its totient is φ = 6808147464.

The previous prime is 20424442399. The next prime is 20424442427. The reversal of 20424442404 is 40424442402.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 851018422 + ... + 851018445.

Almost surely, 2^20424442404 is an apocalyptic number.

It is an amenable number.

20424442404 is an abundant number, since it is smaller than the sum of its proper divisors (27232589900).

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

20424442404 is a wasteful number, since it uses less digits than its factorization.

20424442404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702036874 (or 1702036872 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 30.

Adding to 20424442404 its reverse (40424442402), we get a palindrome (60848884806).

The spelling of 20424442404 in words is "twenty billion, four hundred twenty-four million, four hundred forty-two thousand, four hundred four".