13316556 has 48 divisors (see below), whose sum is σ = 34352640. Its totient is φ = 3981120.

The previous prime is 13316551. The next prime is 13316573. The reversal of 13316556 is 65561331.

13316556 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 2×13316556² = 354661327402272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13316551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9790 + ... + 11066.

It is an arithmetic number, because the mean of its divisors is an integer number (715680).

Almost surely, 2^13316556 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 13316556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17176320).

13316556 is an abundant number, since it is smaller than the sum of its proper divisors (21036084).

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

13316556 is a wasteful number, since it uses less digits than its factorization.

13316556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374 (or 1372 counting only the distinct ones).

The product of its digits is 8100, while the sum is 30.

The square root of 13316556 is about 3649.1856625828. The cubic root of 13316556 is about 237.0267199129.

Adding to 13316556 its reverse (65561331), we get a palindrome (78877887).

It can be divided in two parts, 1331 and 6556, that added together give a palindrome (7887).

The spelling of 13316556 in words is "thirteen million, three hundred sixteen thousand, five hundred fifty-six".