204345800 has 96 divisors (see below), whose sum is σ = 512110080. Its totient is φ = 75609600.

The previous prime is 204345787. The next prime is 204345833. The reversal of 204345800 is 8543402.

It is a self number, because there is not a number n which added to its sum of digits gives 204345800.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141884 + ... + 143316.

It is an arithmetic number, because the mean of its divisors is an integer number (5334480).

Almost surely, 2^204345800 is an apocalyptic number.

204345800 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 204345800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256055040).

204345800 is an abundant number, since it is smaller than the sum of its proper divisors (307764280).

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

204345800 is a wasteful number, since it uses less digits than its factorization.

204345800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503 (or 1494 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 204345800 is about 14294.9571527864. The cubic root of 204345800 is about 589.0089654013.

The spelling of 204345800 in words is "two hundred four million, three hundred forty-five thousand, eight hundred".