12166238 has 8 divisors (see below), whose sum is σ = 20856432. Its totient is φ = 5214096.

The previous prime is 12166207. The next prime is 12166243. The reversal of 12166238 is 83266121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12166238.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434495 + ... + 434522.

It is an arithmetic number, because the mean of its divisors is an integer number (2607054).

Almost surely, 2^12166238 is an apocalyptic number.

12166238 is a deficient number, since it is larger than the sum of its proper divisors (8690194).

12166238 is an equidigital number, since it uses as much as digits as its factorization.

12166238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869026.

The product of its digits is 3456, while the sum is 29.

The square root of 12166238 is about 3488.0134747446. The cubic root of 12166238 is about 229.9951983875.

The spelling of 12166238 in words is "twelve million, one hundred sixty-six thousand, two hundred thirty-eight".