20404334000 has 80 divisors (see below), whose sum is σ = 49372078080. Its totient is φ = 8156044800.

The previous prime is 20404333991. The next prime is 20404334021. The reversal of 20404334000 is 43340402.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 3983441 + ... + 3988559.

It is an arithmetic number, because the mean of its divisors is an integer number (617150976).

Almost surely, 2^20404334000 is an apocalyptic number.

20404334000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20404334000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24686039040).

20404334000 is an abundant number, since it is smaller than the sum of its proper divisors (28967744080).

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

20404334000 is a wasteful number, since it uses less digits than its factorization.

20404334000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7135 (or 7119 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 20404334000 its reverse (43340402), we get a palindrome (20447674402).

The spelling of 20404334000 in words is "twenty billion, four hundred four million, three hundred thirty-four thousand".