13143616 has 28 divisors (see below), whose sum is σ = 26723340. Its totient is φ = 6410240.

The previous prime is 13143587. The next prime is 13143617. The reversal of 13143616 is 61634131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2903616 + 10240000 = 1704^2 + 3200^2 .

It is not an unprimeable number, because it can be changed into a prime (13143617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120 + ... + 5128.

It is an arithmetic number, because the mean of its divisors is an integer number (954405).

Almost surely, 2^13143616 is an apocalyptic number.

13143616 is a gapful number since it is divisible by the number (16) 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 13143616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13361670).

13143616 is an abundant number, since it is smaller than the sum of its proper divisors (13579724).

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

13143616 is an equidigital number, since it uses as much as digits as its factorization.

13143616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5062 (or 5052 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

The square root of 13143616 is about 3625.4125282511. The cubic root of 13143616 is about 235.9961696209.

Adding to 13143616 its reverse (61634131), we get a palindrome (74777747).

The spelling of 13143616 in words is "thirteen million, one hundred forty-three thousand, six hundred sixteen".