166238 has 8 divisors (see below), whose sum is σ = 255288. Its totient is φ = 81144.

The previous prime is 166237. The next prime is 166247. The reversal of 166238 is 832661.

166238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a zygodrome in base 3.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 166238.

It is not an unprimeable number, because it can be changed into a prime (166237) 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, 881 + ... + 1052.

It is an arithmetic number, because the mean of its divisors is an integer number (31911).

2¹⁶⁶²³⁸ is an apocalyptic number.

166238 is a deficient number, since it is larger than the sum of its proper divisors (89050).

166238 is a wasteful number, since it uses less digits than its factorization.

166238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978.

The product of its digits is 1728, while the sum is 26.

The square root of 166238 is about 407.7229451478. The cubic root of 166238 is about 54.9848994357.

Adding to 166238 its reverse (832661), we get a palindrome (998899).

It can be divided in two parts, 166 and 238, that added together give a palindrome (404).

The spelling of 166238 in words is "one hundred sixty-six thousand, two hundred thirty-eight".