12228387 has 8 divisors (see below), whose sum is σ = 17013504. Its totient is φ = 7797768.

The previous prime is 12228367. The next prime is 12228397. The reversal of 12228387 is 78382221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12228387 - 2¹¹ = 12226339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12228367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88543 + ... + 88680.

It is an arithmetic number, because the mean of its divisors is an integer number (2126688).

Almost surely, 2^12228387 is an apocalyptic number.

12228387 is a deficient number, since it is larger than the sum of its proper divisors (4785117).

12228387 is a wasteful number, since it uses less digits than its factorization.

12228387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177249.

The product of its digits is 10752, while the sum is 33.

The square root of 12228387 is about 3496.9110654977. The cubic root of 12228387 is about 230.3861628758.

The spelling of 12228387 in words is "twelve million, two hundred twenty-eight thousand, three hundred eighty-seven".