14221636 has 72 divisors (see below), whose sum is σ = 31215744. Its totient is φ = 5586240.

The previous prime is 14221631. The next prime is 14221643. The reversal of 14221636 is 63612241.

Its product of digits (1728) is a multiple of the sum of its prime divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 14221636.

It is not an unprimeable number, because it can be changed into a prime (14221631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 302565 + ... + 302611.

It is an arithmetic number, because the mean of its divisors is an integer number (433552).

Almost surely, 2^14221636 is an apocalyptic number.

It is an amenable number.

14221636 is an abundant number, since it is smaller than the sum of its proper divisors (16994108).

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

14221636 is a wasteful number, since it uses less digits than its factorization.

14221636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 96 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 14221636 is about 3771.1584427070. The cubic root of 14221636 is about 242.2794168012.

Adding to 14221636 its reverse (63612241), we get a palindrome (77833877).

The spelling of 14221636 in words is "fourteen million, two hundred twenty-one thousand, six hundred thirty-six".