20404321300 has 72 divisors (see below), whose sum is σ = 49426024032. Its totient is φ = 7247184000.

The previous prime is 20404321279. The next prime is 20404321307. The reversal of 20404321300 is 312340402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20404321307) 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, 168391 + ... + 262990.

It is an arithmetic number, because the mean of its divisors is an integer number (686472556).

Almost surely, 2^20404321300 is an apocalyptic number.

20404321300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20404321300 is an abundant number, since it is smaller than the sum of its proper divisors (29021702732).

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

20404321300 is a wasteful number, since it uses less digits than its factorization.

20404321300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431449 (or 431442 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20404321300 its reverse (312340402), we get a palindrome (20716661702).

The spelling of 20404321300 in words is "twenty billion, four hundred four million, three hundred twenty-one thousand, three hundred".