171408 has 20 divisors (see below), whose sum is σ = 442928. Its totient is φ = 57120.

The previous prime is 171403. The next prime is 171427. The reversal of 171408 is 804171.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (171401) by changing a digit.

171408 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 3 ways as a sum of consecutive naturals, for example, 1738 + ... + 1833.

2¹⁷¹⁴⁰⁸ is an apocalyptic number.

It is an amenable number.

171408 is an abundant number, since it is smaller than the sum of its proper divisors (271520).

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

171408 is a wasteful number, since it uses less digits than its factorization.

171408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3582 (or 3576 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 171408 is about 414.0144925000. The cubic root of 171408 is about 55.5491002870.

Adding to 171408 its reverse (804171), we get a palindrome (975579).

The spelling of 171408 in words is "one hundred seventy-one thousand, four hundred eight".