12926257 has 8 divisors (see below), whose sum is σ = 13429800. Its totient is φ = 12426624.

The previous prime is 12926231. The next prime is 12926267. The reversal of 12926257 is 75262921.

12926257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 30976 + 12895281 = 176^2 + 3591^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12926257 - 2⁷ = 12926129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12926227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6973 + ... + 8629.

It is an arithmetic number, because the mean of its divisors is an integer number (1678725).

Almost surely, 2^12926257 is an apocalyptic number.

It is an amenable number.

12926257 is a deficient number, since it is larger than the sum of its proper divisors (503543).

12926257 is a wasteful number, since it uses less digits than its factorization.

12926257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955.

The product of its digits is 15120, while the sum is 34.

The square root of 12926257 is about 3595.3104177525. The cubic root of 12926257 is about 234.6880242251.

The spelling of 12926257 in words is "twelve million, nine hundred twenty-six thousand, two hundred fifty-seven".