12144388 has 12 divisors (see below), whose sum is σ = 21985740. Its totient is φ = 5862752.

The previous prime is 12144371. The next prime is 12144389. The reversal of 12144388 is 88344121.

It can be written as a sum of positive squares in 2 ways, for example, as 7851204 + 4293184 = 2802^2 + 2072^2 .

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, 52231 + ... + 52462.

It is an arithmetic number, because the mean of its divisors is an integer number (1832145).

Almost surely, 2^12144388 is an apocalyptic number.

It is an amenable number.

12144388 is a deficient number, since it is larger than the sum of its proper divisors (9841352).

12144388 is a wasteful number, since it uses less digits than its factorization.

12144388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104726 (or 104724 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 12144388 is about 3484.8799118478. The cubic root of 12144388 is about 229.8574289705.

It can be divided in two parts, 12 and 144388, that added together give a square (144400 = 380²).

The spelling of 12144388 in words is "twelve million, one hundred forty-four thousand, three hundred eighty-eight".