13216736 has 24 divisors (see below), whose sum is σ = 28022904. Its totient is φ = 6099840.

The previous prime is 13216727. The next prime is 13216741. The reversal of 13216736 is 63761231.

13216736 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13216736² = 349364220987392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13216699 and 13216708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15470 + ... + 16301.

It is an arithmetic number, because the mean of its divisors is an integer number (1167621).

Almost surely, 2^13216736 is an apocalyptic number.

13216736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13216736 is an abundant number, since it is smaller than the sum of its proper divisors (14806168).

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

13216736 is a wasteful number, since it uses less digits than its factorization.

13216736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31794 (or 31786 counting only the distinct ones).

The product of its digits is 4536, while the sum is 29.

The square root of 13216736 is about 3635.4829115263. The cubic root of 13216736 is about 236.4329885070.

Adding to 13216736 its reverse (63761231), we get a palindrome (76977967).

The spelling of 13216736 in words is "thirteen million, two hundred sixteen thousand, seven hundred thirty-six".