12491336 has 64 divisors (see below), whose sum is σ = 28123200. Its totient is φ = 5126400.

The previous prime is 12491333. The next prime is 12491351. The reversal of 12491336 is 63319421.

12491336 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12491299 and 12491308.

It is not an unprimeable number, because it can be changed into a prime (12491333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69695 + ... + 69873.

It is an arithmetic number, because the mean of its divisors is an integer number (439425).

Almost surely, 2^12491336 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 12491336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14061600).

12491336 is an abundant number, since it is smaller than the sum of its proper divisors (15631864).

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

12491336 is a wasteful number, since it uses less digits than its factorization.

12491336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 266 counting only the distinct ones).

The product of its digits is 3888, while the sum is 29.

The square root of 12491336 is about 3534.3084189131. The cubic root of 12491336 is about 232.0258096534.

The spelling of 12491336 in words is "twelve million, four hundred ninety-one thousand, three hundred thirty-six".