12957158 has 4 divisors (see below), whose sum is σ = 19435740. Its totient is φ = 6478578.

The previous prime is 12957151. The next prime is 12957209. The reversal of 12957158 is 85175921.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12957151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3239288 + ... + 3239291.

It is an arithmetic number, because the mean of its divisors is an integer number (4858935).

Almost surely, 2^12957158 is an apocalyptic number.

12957158 is a deficient number, since it is larger than the sum of its proper divisors (6478582).

12957158 is an equidigital number, since it uses as much as digits as its factorization.

12957158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6478581.

The product of its digits is 25200, while the sum is 38.

The square root of 12957158 is about 3599.6052561357. The cubic root of 12957158 is about 234.8748873788.

The spelling of 12957158 in words is "twelve million, nine hundred fifty-seven thousand, one hundred fifty-eight".