12528347 has 4 divisors (see below), whose sum is σ = 13492080. Its totient is φ = 11564616.

The previous prime is 12528331. The next prime is 12528349. The reversal of 12528347 is 74382521.

12528347 is nontrivially palindromic in base 11.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74382521 = 2207 ⋅33703.

It is a cyclic number.

It is not a de Polignac number, because 12528347 - 2⁴ = 12528331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12528349) 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, 481847 + ... + 481872.

It is an arithmetic number, because the mean of its divisors is an integer number (3373020).

Almost surely, 2^12528347 is an apocalyptic number.

12528347 is a deficient number, since it is larger than the sum of its proper divisors (963733).

12528347 is an equidigital number, since it uses as much as digits as its factorization.

12528347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963732.

The product of its digits is 13440, while the sum is 32.

The square root of 12528347 is about 3539.5405069020. The cubic root of 12528347 is about 232.2547427253.

The spelling of 12528347 in words is "twelve million, five hundred twenty-eight thousand, three hundred forty-seven".