12287308 has 36 divisors (see below), whose sum is σ = 24131520. Its totient is φ = 5468320.

The previous prime is 12287273. The next prime is 12287309. The reversal of 12287308 is 80378221.

It is a self number, because there is not a number n which added to its sum of digits gives 12287308.

It is not an unprimeable number, because it can be changed into a prime (12287309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25413 + ... + 25891.

It is an arithmetic number, because the mean of its divisors is an integer number (670320).

Almost surely, 2^12287308 is an apocalyptic number.

It is an amenable number.

12287308 is a deficient number, since it is larger than the sum of its proper divisors (11844212).

12287308 is a wasteful number, since it uses less digits than its factorization.

12287308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558 (or 545 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 12287308 is about 3505.3256624742. The cubic root of 12287308 is about 230.7555994113.

The spelling of 12287308 in words is "twelve million, two hundred eighty-seven thousand, three hundred eight".