204400604000 has 96 divisors (see below), whose sum is σ = 507856003200. Its totient is φ = 80841446400.

The previous prime is 204400603999. The next prime is 204400604011. The reversal of 204400604000 is 406004402.

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

It is a congruent number.

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, 68921 + ... + 643079.

It is an arithmetic number, because the mean of its divisors is an integer number (5290166700).

Almost surely, 2^204400604000 is an apocalyptic number.

204400604000 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 204400604000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253928001600).

204400604000 is an abundant number, since it is smaller than the sum of its proper divisors (303455399200).

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

204400604000 is an equidigital number, since it uses as much as digits as its factorization.

204400604000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574273 (or 574255 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 204400604000 its reverse (406004402), we get a palindrome (204806608402).

The spelling of 204400604000 in words is "two hundred four billion, four hundred million, six hundred four thousand".