13117738 has 8 divisors (see below), whose sum is σ = 19715940. Its totient is φ = 6545760.

The previous prime is 13117723. The next prime is 13117739. The reversal of 13117738 is 83771131.

It can be written as a sum of positive squares in 2 ways, for example, as 11512449 + 1605289 = 3393^2 + 1267^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (13117739) 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, 5253 + ... + 7336.

Almost surely, 2^13117738 is an apocalyptic number.

13117738 is a deficient number, since it is larger than the sum of its proper divisors (6598202).

13117738 is a wasteful number, since it uses less digits than its factorization.

13117738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13112.

The product of its digits is 3528, while the sum is 31.

The square root of 13117738 is about 3621.8417966554. The cubic root of 13117738 is about 235.8411863628.

Adding to 13117738 its reverse (83771131), we get a palindrome (96888869).

The spelling of 13117738 in words is "thirteen million, one hundred seventeen thousand, seven hundred thirty-eight".