12115300 has 36 divisors (see below), whose sum is σ = 26582500. Its totient is φ = 4792320.

The previous prime is 12115297. The next prime is 12115309. The reversal of 12115300 is 351121.

It can be written as a sum of positive squares in 6 ways, for example, as 541696 + 11573604 = 736^2 + 3402^2 .

It is not an unprimeable number, because it can be changed into a prime (12115309) 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 11 ways as a sum of consecutive naturals, for example, 9076 + ... + 10324.

Almost surely, 2^12115300 is an apocalyptic number.

12115300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12115300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13291250).

12115300 is an abundant number, since it is smaller than the sum of its proper divisors (14467200).

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

12115300 is a wasteful number, since it uses less digits than its factorization.

12115300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360 (or 1353 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 12115300 is about 3480.7039517891. The cubic root of 12115300 is about 229.6737655878.

Adding to 12115300 its reverse (351121), we get a palindrome (12466421).

The spelling of 12115300 in words is "twelve million, one hundred fifteen thousand, three hundred".