12847157 has 4 divisors (see below), whose sum is σ = 12908256. Its totient is φ = 12786060.

The previous prime is 12847139. The next prime is 12847187. The reversal of 12847157 is 75174821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12847157 - 2¹⁰ = 12846133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12847117) 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, 30233 + ... + 30654.

It is an arithmetic number, because the mean of its divisors is an integer number (3227064).

Almost surely, 2^12847157 is an apocalyptic number.

It is an amenable number.

12847157 is a deficient number, since it is larger than the sum of its proper divisors (61099).

12847157 is an equidigital number, since it uses as much as digits as its factorization.

12847157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61098.

The product of its digits is 15680, while the sum is 35.

The square root of 12847157 is about 3584.2930962744. The cubic root of 12847157 is about 234.2083334683.

The spelling of 12847157 in words is "twelve million, eight hundred forty-seven thousand, one hundred fifty-seven".