166228 has 12 divisors (see below), whose sum is σ = 301140. Its totient is φ = 80192.

The previous prime is 166219. The next prime is 166237. The reversal of 166228 is 822661.

It is an interprime number because it is at equal distance from previous prime (166219) and next prime (166237).

It can be written as a sum of positive squares in 2 ways, for example, as 114244 + 51984 = 338^2 + 228^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601 + ... + 832.

It is an arithmetic number, because the mean of its divisors is an integer number (25095).

2¹⁶⁶²²⁸ is an apocalyptic number.

It is an amenable number.

166228 is a deficient number, since it is larger than the sum of its proper divisors (134912).

166228 is a wasteful number, since it uses less digits than its factorization.

166228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1466 (or 1464 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The square root of 166228 is about 407.7106817340. The cubic root of 166228 is about 54.9837968799.

Adding to 166228 its reverse (822661), we get a palindrome (988889).

The spelling of 166228 in words is "one hundred sixty-six thousand, two hundred twenty-eight".