20020043804 has 24 divisors (see below), whose sum is σ = 37345862400. Its totient is φ = 9363135600.

The previous prime is 20020043803. The next prime is 20020043809. The reversal of 20020043804 is 40834002002.

It is a self number, because there is not a number n which added to its sum of digits gives 20020043804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020043803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1661222 + ... + 1673229.

It is an arithmetic number, because the mean of its divisors is an integer number (1556077600).

Almost surely, 2^20020043804 is an apocalyptic number.

It is an amenable number.

20020043804 is a deficient number, since it is larger than the sum of its proper divisors (17325818596).

20020043804 is a wasteful number, since it uses less digits than its factorization.

20020043804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3334553 (or 3334551 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20020043804 its reverse (40834002002), we get a palindrome (60854045806).

The spelling of 20020043804 in words is "twenty billion, twenty million, forty-three thousand, eight hundred four".