12107656 has 16 divisors (see below), whose sum is σ = 24765840. Its totient is φ = 5503440.

The previous prime is 12107651. The next prime is 12107659. The reversal of 12107656 is 65670121.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12107651) 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 3 ways as a sum of consecutive naturals, for example, 68706 + ... + 68881.

It is an arithmetic number, because the mean of its divisors is an integer number (1547865).

Almost surely, 2^12107656 is an apocalyptic number.

It is an amenable number.

12107656 is an abundant number, since it is smaller than the sum of its proper divisors (12658184).

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

12107656 is a wasteful number, since it uses less digits than its factorization.

12107656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137604 (or 137600 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 12107656 is about 3479.6057247912. The cubic root of 12107656 is about 229.6254521433.

Adding to 12107656 its reverse (65670121), we get a palindrome (77777777).

The spelling of 12107656 in words is "twelve million, one hundred seven thousand, six hundred fifty-six".