20044442430 has 96 divisors (see below), whose sum is σ = 54119482560. Its totient is φ = 5141068800.

The previous prime is 20044442423. The next prime is 20044442471. The reversal of 20044442430 is 3424444002.

It is a happy number.

20044442430 is a `hidden beast` number, since 200 + 4 + 4 + 4 + 424 + 30 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20044442394 and 20044442403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 671830 + ... + 701030.

It is an arithmetic number, because the mean of its divisors is an integer number (563744610).

Almost surely, 2^20044442430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20044442430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27059741280).

20044442430 is an abundant number, since it is smaller than the sum of its proper divisors (34075040130).

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

20044442430 is a wasteful number, since it uses less digits than its factorization.

20044442430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29506 (or 29503 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 20044442430 its reverse (3424444002), we get a palindrome (23468886432).

The spelling of 20044442430 in words is "twenty billion, forty-four million, four hundred forty-two thousand, four hundred thirty".