12144386 has 8 divisors (see below), whose sum is σ = 18246924. Its totient is φ = 6062080.

The previous prime is 12144371. The next prime is 12144389. The reversal of 12144386 is 68344121.

It can be written as a sum of positive squares in 2 ways, for example, as 8886361 + 3258025 = 2981^2 + 1805^2 .

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

It is a super-2 number, since 2×12144386² = 294972222633992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12144389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3455 + ... + 6018.

Almost surely, 2^12144386 is an apocalyptic number.

12144386 is a deficient number, since it is larger than the sum of its proper divisors (6102538).

12144386 is an equidigital number, since it uses as much as digits as its factorization.

12144386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10116.

The product of its digits is 4608, while the sum is 29.

The square root of 12144386 is about 3484.8796248938. The cubic root of 12144386 is about 229.8574163524.

The spelling of 12144386 in words is "twelve million, one hundred forty-four thousand, three hundred eighty-six".