12144330 has 160 divisors (see below), whose sum is σ = 37635840. Its totient is φ = 2782080.

The previous prime is 12144313. The next prime is 12144331. The reversal of 12144330 is 3344121.

It is a super-2 number, since 2×12144330² = 294969502297800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12144331) 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 79 ways as a sum of consecutive naturals, for example, 258367 + ... + 258413.

It is an arithmetic number, because the mean of its divisors is an integer number (235224).

Almost surely, 2^12144330 is an apocalyptic number.

12144330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12144330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18817920).

12144330 is an abundant number, since it is smaller than the sum of its proper divisors (25491510).

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

12144330 is a wasteful number, since it uses less digits than its factorization.

12144330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 12144330 is about 3484.8715901737. The cubic root of 12144330 is about 229.8570630469.

Adding to 12144330 its reverse (3344121), we get a palindrome (15488451).

The spelling of 12144330 in words is "twelve million, one hundred forty-four thousand, three hundred thirty".