170228 has 6 divisors (see below), whose sum is σ = 297906. Its totient is φ = 85112.

The previous prime is 170227. The next prime is 170231. The reversal of 170228 is 822071.

170228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 169744 + 484 = 412^2 + 22^2 .

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21275 + ... + 21282.

It is an arithmetic number, because the mean of its divisors is an integer number (49651).

2¹⁷⁰²²⁸ is an apocalyptic number.

It is an amenable number.

170228 is a deficient number, since it is larger than the sum of its proper divisors (127678).

170228 is a wasteful number, since it uses less digits than its factorization.

170228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42561 (or 42559 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 170228 is about 412.5869605307. The cubic root of 170228 is about 55.4213370352.

Adding to 170228 its reverse (822071), we get a palindrome (992299).

The spelling of 170228 in words is "one hundred seventy thousand, two hundred twenty-eight".