13247316 has 36 divisors (see below), whose sum is σ = 34643700. Its totient is φ = 4263168.

The previous prime is 13247303. The next prime is 13247317. The reversal of 13247316 is 61374231.

It can be written as a sum of positive squares in 2 ways, for example, as 3920400 + 9326916 = 1980^2 + 3054^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 13247316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13247317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5301 + ... + 7388.

It is an arithmetic number, because the mean of its divisors is an integer number (962325).

Almost surely, 2^13247316 is an apocalyptic number.

It is an amenable number.

13247316 is an abundant number, since it is smaller than the sum of its proper divisors (21396384).

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

13247316 is a wasteful number, since it uses less digits than its factorization.

13247316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12728 (or 12723 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 13247316 is about 3639.6862502144. The cubic root of 13247316 is about 236.6151956660.

The spelling of 13247316 in words is "thirteen million, two hundred forty-seven thousand, three hundred sixteen".