13117744 has 40 divisors (see below), whose sum is σ = 27855360. Its totient is φ = 5956608.

The previous prime is 13117739. The next prime is 13117757. The reversal of 13117744 is 44771131.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7057 + ... + 8719.

It is an arithmetic number, because the mean of its divisors is an integer number (696384).

Almost surely, 2^13117744 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 13117744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13927680).

13117744 is an abundant number, since it is smaller than the sum of its proper divisors (14737616).

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

13117744 is a wasteful number, since it uses less digits than its factorization.

13117744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717 (or 1711 counting only the distinct ones).

The product of its digits is 2352, while the sum is 28.

The square root of 13117744 is about 3621.8426249632. The cubic root of 13117744 is about 235.8412223204.

Adding to 13117744 its reverse (44771131), we get a palindrome (57888875).

It can be divided in two parts, 13117 and 744, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 13117744 in words is "thirteen million, one hundred seventeen thousand, seven hundred forty-four".