170240 has 72 divisors (see below), whose sum is σ = 490560. Its totient is φ = 55296.

The previous prime is 170239. The next prime is 170243. The reversal of 170240 is 42071.

It is a happy number.

170240 is nontrivially palindromic in base 12.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (170243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8951 + ... + 8969.

2¹⁷⁰²⁴⁰ is an apocalyptic number.

170240 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 170240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245280).

170240 is an abundant number, since it is smaller than the sum of its proper divisors (320320).

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

170240 is an equidigital number, since it uses as much as digits as its factorization.

170240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47 (or 33 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 170240 is about 412.6015026633. The cubic root of 170240 is about 55.4226392894.

The spelling of 170240 in words is "one hundred seventy thousand, two hundred forty", and thus it is an iban number.