12530306 has 4 divisors (see below), whose sum is σ = 18795462. Its totient is φ = 6265152.

The previous prime is 12530303. The next prime is 12530311. The reversal of 12530306 is 60303521.

12530306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6325225 + 6205081 = 2515^2 + 2491^2 .

It is not an unprimeable number, because it can be changed into a prime (12530303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3132575 + ... + 3132578.

Almost surely, 2^12530306 is an apocalyptic number.

12530306 is a deficient number, since it is larger than the sum of its proper divisors (6265156).

12530306 is an equidigital number, since it uses as much as digits as its factorization.

12530306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6265155.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 12530306 is about 3539.8172269201. The cubic root of 12530306 is about 232.2668476297.

Adding to 12530306 its reverse (60303521), we get a palindrome (72833827).

The spelling of 12530306 in words is "twelve million, five hundred thirty thousand, three hundred six".