204017290 has 8 divisors (see below), whose sum is σ = 367231140. Its totient is φ = 81606912.

The previous prime is 204017267. The next prime is 204017309. The reversal of 204017290 is 92710402.

It can be written as a sum of positive squares in 2 ways, for example, as 203889841 + 127449 = 14279^2 + 357^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 10200855 + ... + 10200874.

Almost surely, 2^204017290 is an apocalyptic number.

204017290 is a deficient number, since it is larger than the sum of its proper divisors (163213850).

204017290 is a wasteful number, since it uses less digits than its factorization.

204017290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20401736.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 204017290 is about 14283.4621153276. The cubic root of 204017290 is about 588.6931622924.

Adding to 204017290 its reverse (92710402), we get a palindrome (296727692).

The spelling of 204017290 in words is "two hundred four million, seventeen thousand, two hundred ninety".