12286305 has 12 divisors (see below), whose sum is σ = 21296340. Its totient is φ = 6552672.

The previous prime is 12286289. The next prime is 12286333. The reversal of 12286305 is 50368221.

12286305 is a `hidden beast` number, since 1 + 2 + 28 + 630 + 5 = 666.

12286305 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6640929 + 5645376 = 2577^2 + 2376^2 .

It is not a de Polignac number, because 12286305 - 2⁴ = 12286289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136470 + ... + 136559.

It is an arithmetic number, because the mean of its divisors is an integer number (1774695).

Almost surely, 2^12286305 is an apocalyptic number.

12286305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12286305 is a deficient number, since it is larger than the sum of its proper divisors (9010035).

12286305 is a wasteful number, since it uses less digits than its factorization.

12286305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273040 (or 273037 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 12286305 is about 3505.1825915350. The cubic root of 12286305 is about 230.7493204617.

The spelling of 12286305 in words is "twelve million, two hundred eighty-six thousand, three hundred five".