12726506 has 16 divisors (see below), whose sum is σ = 21768264. Its totient is φ = 5528064.

The previous prime is 12726503. The next prime is 12726509. The reversal of 12726506 is 60562721.

It is an interprime number because it is at equal distance from previous prime (12726503) and next prime (12726509).

It can be written as a sum of positive squares in 4 ways, for example, as 9150625 + 3575881 = 3025^2 + 1891^2 .

It is not an unprimeable number, because it can be changed into a prime (12726503) 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, 13955 + ... + 14838.

Almost surely, 2^12726506 is an apocalyptic number.

12726506 is a deficient number, since it is larger than the sum of its proper divisors (9041758).

12726506 is a wasteful number, since it uses less digits than its factorization.

12726506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28825.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 12726506 is about 3567.4228793346. The cubic root of 12726506 is about 233.4728557845.

The spelling of 12726506 in words is "twelve million, seven hundred twenty-six thousand, five hundred six".