13117512 has 64 divisors (see below), whose sum is σ = 34732800. Its totient is φ = 4121600.

The previous prime is 13117487. The next prime is 13117519. The reversal of 13117512 is 21571131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13117519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32512 + ... + 32912.

It is an arithmetic number, because the mean of its divisors is an integer number (542700).

Almost surely, 2^13117512 is an apocalyptic number.

13117512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13117512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17366400).

13117512 is an abundant number, since it is smaller than the sum of its proper divisors (21615288).

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

13117512 is a wasteful number, since it uses less digits than its factorization.

13117512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486 (or 482 counting only the distinct ones).

The product of its digits is 210, while the sum is 21.

The square root of 13117512 is about 3621.8105969252. The cubic root of 13117512 is about 235.8398319521.

Adding to 13117512 its reverse (21571131), we get a palindrome (34688643).

The spelling of 13117512 in words is "thirteen million, one hundred seventeen thousand, five hundred twelve".