12180330 has 96 divisors (see below), whose sum is σ = 35380800. Its totient is φ = 2889216.

The previous prime is 12180323. The next prime is 12180331. The reversal of 12180330 is 3308121.

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

It is not an unprimeable number, because it can be changed into a prime (12180331) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28861 + ... + 29279.

It is an arithmetic number, because the mean of its divisors is an integer number (368550).

Almost surely, 2^12180330 is an apocalyptic number.

12180330 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 12180330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17690400).

12180330 is an abundant number, since it is smaller than the sum of its proper divisors (23200470).

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

12180330 is a wasteful number, since it uses less digits than its factorization.

12180330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468 (or 465 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 12180330 is about 3490.0329511338. The cubic root of 12180330 is about 230.0839643031.

Adding to 12180330 its reverse (3308121), we get a palindrome (15488451).

The spelling of 12180330 in words is "twelve million, one hundred eighty thousand, three hundred thirty".