20303334204400 has 120 divisors (see below), whose sum is σ = 52628079823424. Its totient is φ = 7482757708800.

The previous prime is 20303334204347. The next prime is 20303334204409. The reversal of 20303334204400 is 440243330302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20303334204409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 795384 + ... + 6421783.

Almost surely, 2^{20303334204400} is an apocalyptic number.

20303334204400 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 20303334204400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26314039911712).

20303334204400 is an abundant number, since it is smaller than the sum of its proper divisors (32324745619024).

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

20303334204400 is a wasteful number, since it uses less digits than its factorization.

20303334204400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7217739 (or 7217728 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 28.

Adding to 20303334204400 its reverse (440243330302), we get a palindrome (20743577534702).

The spelling of 20303334204400 in words is "twenty trillion, three hundred three billion, three hundred thirty-four million, two hundred four thousand, four hundred".