220170 has 32 divisors (see below), whose sum is σ = 544320. Its totient is φ = 56960.

The previous prime is 220169. The next prime is 220177. The reversal of 220170 is 71022.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 220170.

It is not an unprimeable number, because it can be changed into a prime (220177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1141 + ... + 1319.

It is an arithmetic number, because the mean of its divisors is an integer number (17010).

2²²⁰¹⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272160).

220170 is an abundant number, since it is smaller than the sum of its proper divisors (324150).

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

220170 is a wasteful number, since it uses less digits than its factorization.

220170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230.

The product of its (nonzero) digits is 28, while the sum is 12.

The square root of 220170 is about 469.2227615962. Note that the first 3 decimals coincide. The cubic root of 220170 is about 60.3836527255.

Adding to 220170 its reverse (71022), we get a palindrome (291192).

The spelling of 220170 in words is "two hundred twenty thousand, one hundred seventy", and thus it is an iban number.