14220728 has 32 divisors (see below), whose sum is σ = 27702000. Its totient is φ = 6838272.

The previous prime is 14220719. The next prime is 14220749. The reversal of 14220728 is 82702241.

It is a junction number, because it is equal to n+sod(n) for n = 14220697 and 14220706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31448 + ... + 31896.

Almost surely, 2^14220728 is an apocalyptic number.

It is an amenable number.

14220728 is a deficient number, since it is larger than the sum of its proper divisors (13481272).

14220728 is a wasteful number, since it uses less digits than its factorization.

14220728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599 (or 595 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 14220728 is about 3771.0380533747. The cubic root of 14220728 is about 242.2742604701.

Adding to 14220728 its reverse (82702241), we get a palindrome (96922969).

The spelling of 14220728 in words is "fourteen million, two hundred twenty thousand, seven hundred twenty-eight".