12239656 has 48 divisors (see below), whose sum is σ = 27142560. Its totient is φ = 5129280.

The previous prime is 12239651. The next prime is 12239659. The reversal of 12239656 is 65693221.

It is not an unprimeable number, because it can be changed into a prime (12239651) 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, 14461 + ... + 15283.

It is an arithmetic number, because the mean of its divisors is an integer number (565470).

Almost surely, 2^12239656 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 12239656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13571280).

12239656 is an abundant number, since it is smaller than the sum of its proper divisors (14902904).

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

12239656 is a wasteful number, since it uses less digits than its factorization.

12239656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866 (or 849 counting only the distinct ones).

The product of its digits is 19440, while the sum is 34.

The square root of 12239656 is about 3498.5219736340. The cubic root of 12239656 is about 230.4569114972.

The spelling of 12239656 in words is "twelve million, two hundred thirty-nine thousand, six hundred fifty-six".