204385320 has 48 divisors (see below), whose sum is σ = 664253460. Its totient is φ = 54502656.

The previous prime is 204385297. The next prime is 204385343. The reversal of 204385320 is 23583402.

It is an interprime number because it is at equal distance from previous prime (204385297) and next prime (204385343).

It can be written as a sum of positive squares in 2 ways, for example, as 182088036 + 22297284 = 13494^2 + 4722^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 283509 + ... + 284228.

Almost surely, 2^204385320 is an apocalyptic number.

204385320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204385320 is an abundant number, since it is smaller than the sum of its proper divisors (459868140).

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

204385320 is a wasteful number, since it uses less digits than its factorization.

204385320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567754 (or 567747 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 204385320 is about 14296.3393916065. The cubic root of 204385320 is about 589.0469339394.

The spelling of 204385320 in words is "two hundred four million, three hundred eighty-five thousand, three hundred twenty".