204317280 has 288 divisors, whose sum is σ = 754790400. Its totient is φ = 50181120.

The previous prime is 204317273. The next prime is 204317287. The reversal of 204317280 is 82713402.

It is an interprime number because it is at equal distance from previous prime (204317273) and next prime (204317287).

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204317287) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 1026621 + ... + 1026819.

It is an arithmetic number, because the mean of its divisors is an integer number (2620800).

Almost surely, 2^204317280 is an apocalyptic number.

204317280 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 204317280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (377395200).

204317280 is an abundant number, since it is smaller than the sum of its proper divisors (550473120).

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

204317280 is a wasteful number, since it uses less digits than its factorization.

204317280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 204317280 is about 14293.9595633960. The cubic root of 204317280 is about 588.9815619880.

The spelling of 204317280 in words is "two hundred four million, three hundred seventeen thousand, two hundred eighty".