12391148 has 24 divisors (see below), whose sum is σ = 27035904. Its totient is φ = 4827600.

The previous prime is 12391111. The next prime is 12391163. The reversal of 12391148 is 84119321.

It is a self number, because there is not a number n which added to its sum of digits gives 12391148.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 19808 + ... + 20423.

It is an arithmetic number, because the mean of its divisors is an integer number (1126496).

Almost surely, 2^12391148 is an apocalyptic number.

It is an amenable number.

12391148 is an abundant number, since it is smaller than the sum of its proper divisors (14644756).

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

12391148 is a wasteful number, since it uses less digits than its factorization.

12391148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40253 (or 40251 counting only the distinct ones).

The product of its digits is 1728, while the sum is 29.

The square root of 12391148 is about 3520.1062483965. The cubic root of 12391148 is about 231.4038150771.

The spelling of 12391148 in words is "twelve million, three hundred ninety-one thousand, one hundred forty-eight".