13216712 has 8 divisors (see below), whose sum is σ = 24781350. Its totient is φ = 6608352.

The previous prime is 13216711. The next prime is 13216727. The reversal of 13216712 is 21761231.

13216712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7806436 + 5410276 = 2794^2 + 2326^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (13216711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 826037 + ... + 826052.

Almost surely, 2^13216712 is an apocalyptic number.

It is an amenable number.

13216712 is a deficient number, since it is larger than the sum of its proper divisors (11564638).

13216712 is a wasteful number, since it uses less digits than its factorization.

13216712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652095 (or 1652091 counting only the distinct ones).

The product of its digits is 504, while the sum is 23.

The square root of 13216712 is about 3635.4796107254. The cubic root of 13216712 is about 236.4328453956.

Adding to 13216712 its reverse (21761231), we get a palindrome (34977943).

The spelling of 13216712 in words is "thirteen million, two hundred sixteen thousand, seven hundred twelve".