12917258 has 4 divisors (see below), whose sum is σ = 19375890. Its totient is φ = 6458628.

The previous prime is 12917249. The next prime is 12917269. The reversal of 12917258 is 85271921.

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., 7823209 + 5094049 = 2797^2 + 2257^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3229313 + ... + 3229316.

Almost surely, 2^12917258 is an apocalyptic number.

12917258 is a deficient number, since it is larger than the sum of its proper divisors (6458632).

12917258 is an equidigital number, since it uses as much as digits as its factorization.

12917258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6458631.

The product of its digits is 10080, while the sum is 35.

The square root of 12917258 is about 3594.0587084799. The cubic root of 12917258 is about 234.6335498886.

The spelling of 12917258 in words is "twelve million, nine hundred seventeen thousand, two hundred fifty-eight".