170940 has 96 divisors (see below), whose sum is σ = 612864. Its totient is φ = 34560.

The previous prime is 170927. The next prime is 170953. The reversal of 170940 is 49071.

It is an interprime number because it is at equal distance from previous prime (170927) and next prime (170953).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

170940 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 31 ways as a sum of consecutive naturals, for example, 4602 + ... + 4638.

It is an arithmetic number, because the mean of its divisors is an integer number (6384).

2¹⁷⁰⁹⁴⁰ is an apocalyptic number.

170940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 170940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306432).

170940 is an abundant number, since it is smaller than the sum of its proper divisors (441924).

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

170940 is a wasteful number, since it uses less digits than its factorization.

170940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 170940 is about 413.4489085728. The cubic root of 170940 is about 55.4984984579.

The spelling of 170940 in words is "one hundred seventy thousand, nine hundred forty".