12130636 has 36 divisors (see below), whose sum is σ = 25137000. Its totient is φ = 5105856.

The previous prime is 12130631. The next prime is 12130649. The reversal of 12130636 is 63603121.

It is not an unprimeable number, because it can be changed into a prime (12130631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11040 + ... + 12088.

It is an arithmetic number, because the mean of its divisors is an integer number (698250).

Almost surely, 2^12130636 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 12130636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12568500).

12130636 is an abundant number, since it is smaller than the sum of its proper divisors (13006364).

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

12130636 is a wasteful number, since it uses less digits than its factorization.

12130636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126 (or 1117 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 12130636 is about 3482.9062577106. The cubic root of 12130636 is about 229.7706346075.

Adding to 12130636 its reverse (63603121), we get a palindrome (75733757).

The spelling of 12130636 in words is "twelve million, one hundred thirty thousand, six hundred thirty-six".