20104431424 has 112 divisors (see below), whose sum is σ = 51454385280. Its totient is φ = 7562741760.

The previous prime is 20104431419. The next prime is 20104431437. The reversal of 20104431424 is 42413440102.

It is a tau number, because it is divible by the number of its divisors (112).

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, 72574 + ... + 213250.

Almost surely, 2^20104431424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20104431424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25727192640).

20104431424 is an abundant number, since it is smaller than the sum of its proper divisors (31349953856).

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

20104431424 is a wasteful number, since it uses less digits than its factorization.

20104431424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140736 (or 140726 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 20104431424 its reverse (42413440102), we get a palindrome (62517871526).

The spelling of 20104431424 in words is "twenty billion, one hundred four million, four hundred thirty-one thousand, four hundred twenty-four".