12240865 has 16 divisors (see below), whose sum is σ = 18079488. Its totient is φ = 7747776.

The previous prime is 12240857. The next prime is 12240869. The reversal of 12240865 is 56804221.

It is a cyclic number.

It is not a de Polignac number, because 12240865 - 2³ = 12240857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12240869) 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, 12997 + ... + 13906.

It is an arithmetic number, because the mean of its divisors is an integer number (1129968).

Almost surely, 2^12240865 is an apocalyptic number.

It is an amenable number.

12240865 is a deficient number, since it is larger than the sum of its proper divisors (5838623).

12240865 is a wasteful number, since it uses less digits than its factorization.

12240865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26928.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 12240865 is about 3498.6947566200. The cubic root of 12240865 is about 230.4644992168.

The spelling of 12240865 in words is "twelve million, two hundred forty thousand, eight hundred sixty-five".