12180144 has 40 divisors (see below), whose sum is σ = 32140800. Its totient is φ = 3972928.

The previous prime is 12180101. The next prime is 12180151. The reversal of 12180144 is 44108121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12180144.

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 7 ways as a sum of consecutive naturals, for example, 444 + ... + 4955.

It is an arithmetic number, because the mean of its divisors is an integer number (803520).

Almost surely, 2^12180144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12180144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16070400).

12180144 is an abundant number, since it is smaller than the sum of its proper divisors (19960656).

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

12180144 is a wasteful number, since it uses less digits than its factorization.

12180144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5457 (or 5451 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 12180144 is about 3490.0063037192. The cubic root of 12180144 is about 230.0827931297.

Adding to 12180144 its reverse (44108121), we get a palindrome (56288265).

The spelling of 12180144 in words is "twelve million, one hundred eighty thousand, one hundred forty-four".