204170 has 16 divisors (see below), whose sum is σ = 389448. Its totient is φ = 76800.

The previous prime is 204163. The next prime is 204173. The reversal of 204170 is 71402.

It is a happy number.

204170 is nontrivially palindromic in base 7.

204170 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 121801 + 82369 = 349^2 + 287^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (204173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431 + ... + 770.

2²⁰⁴¹⁷⁰ is an apocalyptic number.

204170 is a deficient number, since it is larger than the sum of its proper divisors (185278).

204170 is a wasteful number, since it uses less digits than its factorization.

204170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 204170 is about 451.8517455980. The cubic root of 204170 is about 58.8840007546.

Adding to 204170 its reverse (71402), we get a palindrome (275572).

The spelling of 204170 in words is "two hundred four thousand, one hundred seventy", and thus it is an iban number.