12748727 has 4 divisors (see below), whose sum is σ = 12758760. Its totient is φ = 12738696.

The previous prime is 12748711. The next prime is 12748733. The reversal of 12748727 is 72784721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 72784721 = 8287 ⋅8783.

It is a cyclic number.

It is not a de Polignac number, because 12748727 - 2⁴ = 12748711 is a prime.

It is a super-3 number, since 3×12748727³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12748787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2777 + ... + 5762.

It is an arithmetic number, because the mean of its divisors is an integer number (3189690).

Almost surely, 2^12748727 is an apocalyptic number.

12748727 is a deficient number, since it is larger than the sum of its proper divisors (10033).

12748727 is an equidigital number, since it uses as much as digits as its factorization.

12748727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10032.

The product of its digits is 43904, while the sum is 38.

The square root of 12748727 is about 3570.5359541671. The cubic root of 12748727 is about 233.6086611597.

It can be divided in two parts, 1274 and 8727, that added together give a palindrome (10001).

The spelling of 12748727 in words is "twelve million, seven hundred forty-eight thousand, seven hundred twenty-seven".