12565228 has 12 divisors (see below), whose sum is σ = 23680720. Its totient is φ = 5799312.

The previous prime is 12565219. The next prime is 12565243. The reversal of 12565228 is 82256521.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12565228.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120768 + ... + 120871.

Almost surely, 2^12565228 is an apocalyptic number.

It is an amenable number.

12565228 is a deficient number, since it is larger than the sum of its proper divisors (11115492).

12565228 is a wasteful number, since it uses less digits than its factorization.

12565228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241656 (or 241654 counting only the distinct ones).

The product of its digits is 9600, while the sum is 31.

The square root of 12565228 is about 3544.7465353675. The cubic root of 12565228 is about 232.4824236145.

The spelling of 12565228 in words is "twelve million, five hundred sixty-five thousand, two hundred twenty-eight".