12115712 has 36 divisors (see below), whose sum is σ = 27643056. Its totient is φ = 5191680.

The previous prime is 12115693. The next prime is 12115729. The reversal of 12115712 is 21751121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1589 + ... + 5172.

Almost surely, 2^12115712 is an apocalyptic number.

It is an amenable number.

12115712 is an abundant number, since it is smaller than the sum of its proper divisors (15527344).

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

12115712 is an frugal number, since it uses more digits than its factorization.

12115712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6784 (or 6770 counting only the distinct ones).

The product of its digits is 140, while the sum is 20.

The square root of 12115712 is about 3480.7631347163. The cubic root of 12115712 is about 229.6763690319.

Adding to 12115712 its reverse (21751121), we get a palindrome (33866833).

The spelling of 12115712 in words is "twelve million, one hundred fifteen thousand, seven hundred twelve".