171128 has 8 divisors (see below), whose sum is σ = 320880. Its totient is φ = 85560.

The previous prime is 171103. The next prime is 171131. The reversal of 171128 is 821171.

171128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

171128 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10688 + ... + 10703.

It is an arithmetic number, because the mean of its divisors is an integer number (40110).

2¹⁷¹¹²⁸ is an apocalyptic number.

It is an amenable number.

171128 is a deficient number, since it is larger than the sum of its proper divisors (149752).

171128 is a wasteful number, since it uses less digits than its factorization.

171128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21397 (or 21393 counting only the distinct ones).

The product of its digits is 112, while the sum is 20.

The square root of 171128 is about 413.6762018777. The cubic root of 171128 is about 55.5188367735.

Adding to 171128 its reverse (821171), we get a palindrome (992299).

The spelling of 171128 in words is "one hundred seventy-one thousand, one hundred twenty-eight".