12910257 has 6 divisors (see below), whose sum is σ = 18648162. Its totient is φ = 8606832.

The previous prime is 12910243. The next prime is 12910279. The reversal of 12910257 is 75201921.

It can be written as a sum of positive squares in only one way, i.e., 8785296 + 4124961 = 2964^2 + 2031^2 .

It is not a de Polignac number, because 12910257 - 2⁴ = 12910241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12910257.

It is not an unprimeable number, because it can be changed into a prime (12910207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 717228 + ... + 717245.

It is an arithmetic number, because the mean of its divisors is an integer number (3108027).

Almost surely, 2^12910257 is an apocalyptic number.

It is an amenable number.

12910257 is a deficient number, since it is larger than the sum of its proper divisors (5737905).

12910257 is a wasteful number, since it uses less digits than its factorization.

12910257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434479 (or 1434476 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 12910257 is about 3593.0846079657. The cubic root of 12910257 is about 234.5911526982.

The spelling of 12910257 in words is "twelve million, nine hundred ten thousand, two hundred fifty-seven".