12045186 has 20 divisors (see below), whose sum is σ = 26990502. Its totient is φ = 4015008.

The previous prime is 12045181. The next prime is 12045217. The reversal of 12045186 is 68154021.

It can be written as a sum of positive squares in only one way, i.e., 9090225 + 2954961 = 3015^2 + 1719^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12045181) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 37015 + ... + 37338.

Almost surely, 2^12045186 is an apocalyptic number.

12045186 is an abundant number, since it is smaller than the sum of its proper divisors (14945316).

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

12045186 is an equidigital number, since it uses as much as digits as its factorization.

12045186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74367 (or 74358 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 12045186 is about 3470.6175243031. The cubic root of 12045186 is about 229.2298500088.

The spelling of 12045186 in words is "twelve million, forty-five thousand, one hundred eighty-six".