14228821 has 8 divisors (see below), whose sum is σ = 14767200. Its totient is φ = 13693680.

The previous prime is 14228803. The next prime is 14228843. The reversal of 14228821 is 12882241.

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 14228821 - 2⁷ = 14228693 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 14228821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14228801) 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, 11566 + ... + 12736.

It is an arithmetic number, because the mean of its divisors is an integer number (1845900).

Almost surely, 2^14228821 is an apocalyptic number.

It is an amenable number.

14228821 is a deficient number, since it is larger than the sum of its proper divisors (538379).

14228821 is a wasteful number, since it uses less digits than its factorization.

14228821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619.

The product of its digits is 2048, while the sum is 28.

The square root of 14228821 is about 3772.1109474669. The cubic root of 14228821 is about 242.3202110890.

The spelling of 14228821 in words is "fourteen million, two hundred twenty-eight thousand, eight hundred twenty-one".