12726745 has 8 divisors (see below), whose sum is σ = 15361416. Its totient is φ = 10121856.

The previous prime is 12726743. The next prime is 12726757. The reversal of 12726745 is 54762721.

It can be written as a sum of positive squares in 4 ways, for example, as 5125696 + 7601049 = 2264^2 + 2757^2 .

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 12726745 - 2¹ = 12726743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12726745.

It is not an unprimeable number, because it can be changed into a prime (12726743) 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 7 ways as a sum of consecutive naturals, for example, 6492 + ... + 8221.

It is an arithmetic number, because the mean of its divisors is an integer number (1920177).

Almost surely, 2^12726745 is an apocalyptic number.

It is an amenable number.

12726745 is a deficient number, since it is larger than the sum of its proper divisors (2634671).

12726745 is a wasteful number, since it uses less digits than its factorization.

12726745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14891.

The product of its digits is 23520, while the sum is 34.

The square root of 12726745 is about 3567.4563767480. The cubic root of 12726745 is about 233.4743172923.

The spelling of 12726745 in words is "twelve million, seven hundred twenty-six thousand, seven hundred forty-five".