13228716 has 12 divisors (see below), whose sum is σ = 30867032. Its totient is φ = 4409568.

The previous prime is 13228687. The next prime is 13228717. The reversal of 13228716 is 61782231.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×13228716³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (13228717) 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 3 ways as a sum of consecutive naturals, for example, 551185 + ... + 551208.

Almost surely, 2^13228716 is an apocalyptic number.

It is an amenable number.

13228716 is an abundant number, since it is smaller than the sum of its proper divisors (17638316).

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

13228716 is a wasteful number, since it uses less digits than its factorization.

13228716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102400 (or 1102398 counting only the distinct ones).

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

The square root of 13228716 is about 3637.1301873868. The cubic root of 13228716 is about 236.5044033108.

The spelling of 13228716 in words is "thirteen million, two hundred twenty-eight thousand, seven hundred sixteen".