14221816 has 32 divisors (see below), whose sum is σ = 30636000. Its totient is φ = 6062976.

The previous prime is 14221813. The next prime is 14221819. The reversal of 14221816 is 61812241.

It is an interprime number because it is at equal distance from previous prime (14221813) and next prime (14221819).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14221813) 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 7 ways as a sum of consecutive naturals, for example, 12270 + ... + 13378.

It is an arithmetic number, because the mean of its divisors is an integer number (957375).

Almost surely, 2^14221816 is an apocalyptic number.

It is an amenable number.

14221816 is an abundant number, since it is smaller than the sum of its proper divisors (16414184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

14221816 is a wasteful number, since it uses less digits than its factorization.

14221816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351 (or 1347 counting only the distinct ones).

The product of its digits is 768, while the sum is 25.

The square root of 14221816 is about 3771.1823079772. The cubic root of 14221816 is about 242.2804389553.

The spelling of 14221816 in words is "fourteen million, two hundred twenty-one thousand, eight hundred sixteen".