170842240 has 128 divisors (see below), whose sum is σ = 430848000. Its totient is φ = 64696320.

The previous prime is 170842237. The next prime is 170842253. The reversal of 170842240 is 42248071.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 170842199 and 170842208.

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 15 ways as a sum of consecutive naturals, for example, 1567306 + ... + 1567414.

It is an arithmetic number, because the mean of its divisors is an integer number (3366000).

Almost surely, 2^170842240 is an apocalyptic number.

170842240 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 170842240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215424000).

170842240 is an abundant number, since it is smaller than the sum of its proper divisors (260005760).

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

170842240 is a wasteful number, since it uses less digits than its factorization.

170842240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 170842240 is about 13070.6633343530. The cubic root of 170842240 is about 554.8791664005.

The spelling of 170842240 in words is "one hundred seventy million, eight hundred forty-two thousand, two hundred forty".