204288399 has 112 divisors (see below), whose sum is σ = 384736000. Its totient is φ = 108020304.

The previous prime is 204288379. The next prime is 204288401. The reversal of 204288399 is 993882402.

204288399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 204288399 - 2⁹ = 204287887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204288319) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 4750872 + ... + 4750914.

Almost surely, 2^204288399 is an apocalyptic number.

204288399 is a deficient number, since it is larger than the sum of its proper divisors (180447601).

204288399 is an frugal number, since it uses more digits than its factorization.

204288399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 204288399 is about 14292.9492757793. The cubic root of 204288399 is about 588.9538091093.

The spelling of 204288399 in words is "two hundred four million, two hundred eighty-eight thousand, three hundred ninety-nine".