171328 has 14 divisors (see below), whose sum is σ = 340106. Its totient is φ = 85632.

The previous prime is 171317. The next prime is 171329. The reversal of 171328 is 823171.

It can be written as a sum of positive squares in only one way, i.e., 97344 + 73984 = 312^2 + 272^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 171299 and 171308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171329) by changing a digit.

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, 1275 + ... + 1402.

2¹⁷¹³²⁸ is an apocalyptic number.

It is an amenable number.

171328 is a deficient number, since it is larger than the sum of its proper divisors (168778).

171328 is an equidigital number, since it uses as much as digits as its factorization.

171328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2689 (or 2679 counting only the distinct ones).

The product of its digits is 336, while the sum is 22.

The square root of 171328 is about 413.9178662488. The cubic root of 171328 is about 55.5404569340.

Adding to 171328 its reverse (823171), we get a palindrome (994499).

The spelling of 171328 in words is "one hundred seventy-one thousand, three hundred twenty-eight".