12703257 has 16 divisors (see below), whose sum is σ = 21508480. Its totient is φ = 7258896.

The previous prime is 12703193. The next prime is 12703259. The reversal of 12703257 is 75230721.

12703257 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12703257 - 2⁶ = 12703193 is a prime.

It is a super-2 number, since 2×12703257² = 322745476816098, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 12703257.

It is not an unprimeable number, because it can be changed into a prime (12703259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33418 + ... + 33795.

It is an arithmetic number, because the mean of its divisors is an integer number (1344280).

Almost surely, 2^12703257 is an apocalyptic number.

It is an amenable number.

12703257 is a deficient number, since it is larger than the sum of its proper divisors (8805223).

12703257 is an equidigital number, since it uses as much as digits as its factorization.

12703257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67229 (or 67223 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 12703257 is about 3564.1628750662. The cubic root of 12703257 is about 233.3305983806.

Adding to 12703257 its reverse (75230721), we get a palindrome (87933978).

The spelling of 12703257 in words is "twelve million, seven hundred three thousand, two hundred fifty-seven".