12027144 has 16 divisors (see below), whose sum is σ = 30067920. Its totient is φ = 4009040.

The previous prime is 12027139. The next prime is 12027149. The reversal of 12027144 is 44172021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12027139) and next prime (12027149).

It is a self number, because there is not a number n which added to its sum of digits gives 12027144.

It is not an unprimeable number, because it can be changed into a prime (12027149) 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, 250542 + ... + 250589.

It is an arithmetic number, because the mean of its divisors is an integer number (1879245).

Almost surely, 2^12027144 is an apocalyptic number.

It is an amenable number.

12027144 is an abundant number, since it is smaller than the sum of its proper divisors (18040776).

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

12027144 is a wasteful number, since it uses less digits than its factorization.

12027144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501140 (or 501136 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 12027144 is about 3468.0173009949. The cubic root of 12027144 is about 229.1153414241.

Adding to 12027144 its reverse (44172021), we get a palindrome (56199165).

The spelling of 12027144 in words is "twelve million, twenty-seven thousand, one hundred forty-four".