20204324430 has 64 divisors (see below), whose sum is σ = 49645474560. Its totient is φ = 5259614976.

The previous prime is 20204324419. The next prime is 20204324471. The reversal of 20204324430 is 3442340202.

It is a self number, because there is not a number n which added to its sum of digits gives 20204324430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3323874 + ... + 3329946.

It is an arithmetic number, because the mean of its divisors is an integer number (775710540).

Almost surely, 2^20204324430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20204324430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24822737280).

20204324430 is an abundant number, since it is smaller than the sum of its proper divisors (29441150130).

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

20204324430 is a wasteful number, since it uses less digits than its factorization.

20204324430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8705.

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 20204324430 its reverse (3442340202), we get a palindrome (23646664632).

The spelling of 20204324430 in words is "twenty billion, two hundred four million, three hundred twenty-four thousand, four hundred thirty".