172204 has 6 divisors (see below), whose sum is σ = 301364. Its totient is φ = 86100.

The previous prime is 172199. The next prime is 172213. The reversal of 172204 is 402271.

It is an unprimeable number.

172204 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21522 + ... + 21529.

2¹⁷²²⁰⁴ is an apocalyptic number.

It is an amenable number.

172204 is a deficient number, since it is larger than the sum of its proper divisors (129160).

172204 is a wasteful number, since it uses less digits than its factorization.

172204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43055 (or 43053 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 172204 is about 414.9746980239. The cubic root of 172204 is about 55.6349555046.

Adding to 172204 its reverse (402271), we get a palindrome (574475).

The spelling of 172204 in words is "one hundred seventy-two thousand, two hundred four", and thus it is an iban number.