12247686 has 96 divisors (see below), whose sum is σ = 31449600. Its totient is φ = 3538080.

The previous prime is 12247681. The next prime is 12247709. The reversal of 12247686 is 68674221.

12247686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12247686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12247681) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 154995 + ... + 155073.

It is an arithmetic number, because the mean of its divisors is an integer number (327600).

It is a vampire number, since it can be written as 2871 ⋅ 4266 (with its own digits).

Almost surely, 2^12247686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12247686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15724800).

12247686 is an abundant number, since it is smaller than the sum of its proper divisors (19201914).

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

12247686 is a wasteful number, since it uses less digits than its factorization.

12247686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 124 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 12247686 is about 3499.6694129589. The cubic root of 12247686 is about 230.5072986554.

The spelling of 12247686 in words is "twelve million, two hundred forty-seven thousand, six hundred eighty-six".