12491308 has 6 divisors (see below), whose sum is σ = 21859796. Its totient is φ = 6245652.

The previous prime is 12491299. The next prime is 12491321. The reversal of 12491308 is 80319421.

It is a happy number.

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 as a sum of consecutive naturals, namely, 1561410 + ... + 1561417.

Almost surely, 2^12491308 is an apocalyptic number.

It is an amenable number.

12491308 is a deficient number, since it is larger than the sum of its proper divisors (9368488).

12491308 is a wasteful number, since it uses less digits than its factorization.

12491308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3122831 (or 3122829 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 12491308 is about 3534.3044577399. The cubic root of 12491308 is about 232.0256362871.

The spelling of 12491308 in words is "twelve million, four hundred ninety-one thousand, three hundred eight".