171117140 has 24 divisors (see below), whose sum is σ = 360938592. Its totient is φ = 68143520.

The previous prime is 171117127. The next prime is 171117161. The reversal of 171117140 is 41711171.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 14306 + ... + 23385.

It is an arithmetic number, because the mean of its divisors is an integer number (15039108).

Almost surely, 2^171117140 is an apocalyptic number.

171117140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

171117140 is an abundant number, since it is smaller than the sum of its proper divisors (189821452).

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

171117140 is a wasteful number, since it uses less digits than its factorization.

171117140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37927 (or 37925 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 23.

The square root of 171117140 is about 13081.1750236743. The cubic root of 171117140 is about 555.1766231676.

The spelling of 171117140 in words is "one hundred seventy-one million, one hundred seventeen thousand, one hundred forty".