13008538 has 4 divisors (see below), whose sum is σ = 19512810. Its totient is φ = 6504268.

The previous prime is 13008517. The next prime is 13008539. The reversal of 13008538 is 83580031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83580031 = 19 ⋅4398949.

It can be written as a sum of positive squares in only one way, i.e., 11336689 + 1671849 = 3367^2 + 1293^2 .

It is not an unprimeable number, because it can be changed into a prime (13008539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3252133 + ... + 3252136.

Almost surely, 2^13008538 is an apocalyptic number.

13008538 is a deficient number, since it is larger than the sum of its proper divisors (6504272).

13008538 is an equidigital number, since it uses as much as digits as its factorization.

13008538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6504271.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 13008538 is about 3606.7350886917. The cubic root of 13008538 is about 235.1849336493.

Adding to 13008538 its reverse (83580031), we get a palindrome (96588569).

The spelling of 13008538 in words is "thirteen million, eight thousand, five hundred thirty-eight".