13228712 has 32 divisors (see below), whose sum is σ = 29841600. Its totient is φ = 5370624.

The previous prime is 13228687. The next prime is 13228717. The reversal of 13228712 is 21782231.

13228712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13228717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5153 + ... + 7280.

It is an arithmetic number, because the mean of its divisors is an integer number (932550).

Almost surely, 2^13228712 is an apocalyptic number.

It is an amenable number.

13228712 is an abundant number, since it is smaller than the sum of its proper divisors (16612888).

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

13228712 is a wasteful number, since it uses less digits than its factorization.

13228712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12465 (or 12461 counting only the distinct ones).

The product of its digits is 1344, while the sum is 26.

The square root of 13228712 is about 3637.1296375026. The cubic root of 13228712 is about 236.5043794733.

The spelling of 13228712 in words is "thirteen million, two hundred twenty-eight thousand, seven hundred twelve".