12228545 has 8 divisors (see below), whose sum is σ = 16770624. Its totient is φ = 8385264.

The previous prime is 12228529. The next prime is 12228551. The reversal of 12228545 is 54582221.

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

It is a cyclic number.

It is not a de Polignac number, because 12228545 - 2⁴ = 12228529 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 174659 + ... + 174728.

It is an arithmetic number, because the mean of its divisors is an integer number (2096328).

Almost surely, 2^12228545 is an apocalyptic number.

It is an amenable number.

12228545 is a deficient number, since it is larger than the sum of its proper divisors (4542079).

12228545 is an equidigital number, since it uses as much as digits as its factorization.

12228545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349399.

The product of its digits is 6400, while the sum is 29.

The square root of 12228545 is about 3496.9336567913. The cubic root of 12228545 is about 230.3871551260.

The spelling of 12228545 in words is "twelve million, two hundred twenty-eight thousand, five hundred forty-five".