20334404430 has 240 divisors, whose sum is σ = 57200517792. Its totient is φ = 5182704000.

The previous prime is 20334404417. The next prime is 20334404449. The reversal of 20334404430 is 3440443302.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20334404394 and 20334404403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 117539824 + ... + 117539996.

Almost surely, 2^20334404430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20334404430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28600258896).

20334404430 is an abundant number, since it is smaller than the sum of its proper divisors (36866113362).

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

20334404430 is a wasteful number, since it uses less digits than its factorization.

20334404430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 20334404430 its reverse (3440443302), we get a palindrome (23774847732).

The spelling of 20334404430 in words is "twenty billion, three hundred thirty-four million, four hundred four thousand, four hundred thirty".