20104443420 has 48 divisors (see below), whose sum is σ = 56387469600. Its totient is φ = 5352134656.

The previous prime is 20104443409. The next prime is 20104443431. The reversal of 20104443420 is 2434440102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20104443409) and next prime (20104443431).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246945 + ... + 318104.

It is an arithmetic number, because the mean of its divisors is an integer number (1174738950).

Almost surely, 2^20104443420 is an apocalyptic number.

20104443420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20104443420 is an abundant number, since it is smaller than the sum of its proper divisors (36283026180).

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

20104443420 is a wasteful number, since it uses less digits than its factorization.

20104443420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565654 (or 565652 counting only the distinct ones).

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

Adding to 20104443420 its reverse (2434440102), we get a palindrome (22538883522).

The spelling of 20104443420 in words is "twenty billion, one hundred four million, four hundred forty-three thousand, four hundred twenty".