12538 has 4 divisors (see below), whose sum is σ = 18810. Its totient is φ = 6268.

The previous prime is 12527. The next prime is 12539. The reversal of 12538 is 83521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11449 + 1089 = 107^2 + 33^2 .

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (12539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3133 + ... + 3136.

2¹²⁵³⁸ is an apocalyptic number.

12538 is a deficient number, since it is larger than the sum of its proper divisors (6272).

12538 is an equidigital number, since it uses as much as digits as its factorization.

12538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6271.

The product of its digits is 240, while the sum is 19.

The square root of 12538 is about 111.9732110819. The cubic root of 12538 is about 23.2314377607.

The spelling of 12538 in words is "twelve thousand, five hundred thirty-eight".