13018716 has 36 divisors (see below), whose sum is σ = 33312552. Its totient is φ = 4286304.

The previous prime is 13018711. The next prime is 13018717. The reversal of 13018716 is 61781031.

13018716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13018716.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13018711) 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, 810 + ... + 5166.

Almost surely, 2^13018716 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13018716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16656276).

13018716 is an abundant number, since it is smaller than the sum of its proper divisors (20293836).

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

13018716 is a wasteful number, since it uses less digits than its factorization.

13018716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4450 (or 4445 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 13018716 is about 3608.1457841944. The cubic root of 13018716 is about 235.2462546125.

Adding to 13018716 its reverse (61781031), we get a palindrome (74799747).

The spelling of 13018716 in words is "thirteen million, eighteen thousand, seven hundred sixteen".