13216247 has 8 divisors (see below), whose sum is σ = 14452992. Its totient is φ = 11985400.

The previous prime is 13216243. The next prime is 13216249. The reversal of 13216247 is 74261231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13216247 - 2² = 13216243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13216241) 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, 4178 + ... + 6624.

It is an arithmetic number, because the mean of its divisors is an integer number (1806624).

Almost surely, 2^13216247 is an apocalyptic number.

13216247 is a deficient number, since it is larger than the sum of its proper divisors (1236745).

13216247 is a wasteful number, since it uses less digits than its factorization.

13216247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2949.

The product of its digits is 2016, while the sum is 26.

The square root of 13216247 is about 3635.4156571154. The cubic root of 13216247 is about 236.4300725789.

Adding to 13216247 its reverse (74261231), we get a palindrome (87477478).

The spelling of 13216247 in words is "thirteen million, two hundred sixteen thousand, two hundred forty-seven".