12228867 has 32 divisors (see below), whose sum is σ = 20966400. Its totient is φ = 6899904.

The previous prime is 12228859. The next prime is 12228869. The reversal of 12228867 is 76882221.

It is a happy number.

It is not a de Polignac number, because 12228867 - 2³ = 12228859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12228869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16458 + ... + 17184.

It is an arithmetic number, because the mean of its divisors is an integer number (655200).

Almost surely, 2^12228867 is an apocalyptic number.

12228867 is a deficient number, since it is larger than the sum of its proper divisors (8737533).

12228867 is an equidigital number, since it uses as much as digits as its factorization.

12228867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832 (or 826 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 12228867 is about 3496.9796968241. The cubic root of 12228867 is about 230.3891772803.

The spelling of 12228867 in words is "twelve million, two hundred twenty-eight thousand, eight hundred sixty-seven".