208172 has 12 divisors (see below), whose sum is σ = 369936. Its totient is φ = 102480.

The previous prime is 208147. The next prime is 208189. The reversal of 208172 is 271802.

208172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83 + ... + 650.

It is an arithmetic number, because the mean of its divisors is an integer number (30828).

2²⁰⁸¹⁷² is an apocalyptic number.

It is an amenable number.

208172 is a deficient number, since it is larger than the sum of its proper divisors (161764).

208172 is a wasteful number, since it uses less digits than its factorization.

208172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 208172 is about 456.2586985472. The cubic root of 208172 is about 59.2662485776.

Adding to 208172 its reverse (271802), we get a palindrome (479974).

It can be divided in two parts, 20 and 8172, that added together give a 13-th power (8192 = 2¹³).

The spelling of 208172 in words is "two hundred eight thousand, one hundred seventy-two".