170440 has 16 divisors (see below), whose sum is σ = 383580. Its totient is φ = 68160.

The previous prime is 170413. The next prime is 170441. The reversal of 170440 is 44071.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 161604 + 8836 = 402^2 + 94^2 .

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (170441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2091 + ... + 2170.

2¹⁷⁰⁴⁴⁰ is an apocalyptic number.

170440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

170440 is an abundant number, since it is smaller than the sum of its proper divisors (213140).

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

170440 is a wasteful number, since it uses less digits than its factorization.

170440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4272 (or 4268 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 170440 is about 412.8437961263. The cubic root of 170440 is about 55.4443345235. Note that the first 3 decimals are identical.

The spelling of 170440 in words is "one hundred seventy thousand, four hundred forty", and thus it is an iban number.