204868590 has 32 divisors (see below), whose sum is σ = 513063936. Its totient is φ = 52256160.

The previous prime is 204868589. The next prime is 204868597. The reversal of 204868590 is 95868402.

It is a super-3 number, since 3×204868590³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204868597) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147766 + ... + 149145.

It is an arithmetic number, because the mean of its divisors is an integer number (16033248).

Almost surely, 2^204868590 is an apocalyptic number.

204868590 is an abundant number, since it is smaller than the sum of its proper divisors (308195346).

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

204868590 is a wasteful number, since it uses less digits than its factorization.

204868590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296944.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 204868590 is about 14313.2312913612. The cubic root of 204868590 is about 589.5108365315.

The spelling of 204868590 in words is "two hundred four million, eight hundred sixty-eight thousand, five hundred ninety".