13728216 has 32 divisors (see below), whose sum is σ = 34680240. Its totient is φ = 4528128.

The previous prime is 13728193. The next prime is 13728229. The reversal of 13728216 is 61282731.

It is a congruent 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, 621 + ... + 5276.

Almost surely, 2^13728216 is an apocalyptic number.

It is an amenable number.

13728216 is an abundant number, since it is smaller than the sum of its proper divisors (20952024).

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

13728216 is a wasteful number, since it uses less digits than its factorization.

13728216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6003 (or 5999 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 13728216 is about 3705.1607252588. The cubic root of 13728216 is about 239.4444092658. Note that the first 4 decimals are identical.

The spelling of 13728216 in words is "thirteen million, seven hundred twenty-eight thousand, two hundred sixteen".