12268809 has 24 divisors (see below), whose sum is σ = 20404800. Its totient is φ = 6958368.

The previous prime is 12268801. The next prime is 12268829. The reversal of 12268809 is 90886221.

12268809 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12268809 - 2³ = 12268801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12268801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8734 + ... + 10040.

It is an arithmetic number, because the mean of its divisors is an integer number (850200).

Almost surely, 2^12268809 is an apocalyptic number.

It is an amenable number.

12268809 is a deficient number, since it is larger than the sum of its proper divisors (8135991).

12268809 is a wasteful number, since it uses less digits than its factorization.

12268809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1469 (or 1466 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 12268809 is about 3502.6859693669. The cubic root of 12268809 is about 230.6397375296.

The spelling of 12268809 in words is "twelve million, two hundred sixty-eight thousand, eight hundred nine".