171388 has 12 divisors (see below), whose sum is σ = 342832. Its totient is φ = 73440.

The previous prime is 171383. The next prime is 171401. The reversal of 171388 is 883171.

It is a happy number.

171388 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 6121 = 171388 / (1 + 7 + 1 + 3 + 8 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3033 + ... + 3088.

2¹⁷¹³⁸⁸ is an apocalyptic number.

It is an amenable number.

171388 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171388 is a wasteful number, since it uses less digits than its factorization.

171388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6132 (or 6130 counting only the distinct ones).

The product of its digits is 1344, while the sum is 28.

The square root of 171388 is about 413.9903380515. The cubic root of 171388 is about 55.5469397009.

The spelling of 171388 in words is "one hundred seventy-one thousand, three hundred eighty-eight".