171432 has 24 divisors (see below), whose sum is σ = 464490. Its totient is φ = 57120.

The previous prime is 171427. The next prime is 171439. The reversal of 171432 is 234171.

171432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 171396 + 36 = 414^2 + 6^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 171432.

It is not an unprimeable number, because it can be changed into a prime (171439) by changing a digit.

171432 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 in 5 ways as a sum of consecutive naturals, for example, 1119 + ... + 1262.

2¹⁷¹⁴³² is an apocalyptic number.

171432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

171432 is an abundant number, since it is smaller than the sum of its proper divisors (293058).

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

171432 is a wasteful number, since it uses less digits than its factorization.

171432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393 (or 2386 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 171432 is about 414.0434759781. The cubic root of 171432 is about 55.5516927685.

The spelling of 171432 in words is "one hundred seventy-one thousand, four hundred thirty-two".