12744081 has 16 divisors (see below), whose sum is σ = 21577600. Its totient is φ = 7282224.

The previous prime is 12744077. The next prime is 12744089. The reversal of 12744081 is 18044721.

It is not a de Polignac number, because 12744081 - 2² = 12744077 is a prime.

It is a super-2 number, since 2×12744081² = 324823201069122, which contains 22 as substring.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12744089) 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, 33526 + ... + 33903.

It is an arithmetic number, because the mean of its divisors is an integer number (1348600).

Almost surely, 2^12744081 is an apocalyptic number.

It is an amenable number.

12744081 is a deficient number, since it is larger than the sum of its proper divisors (8833519).

12744081 is an equidigital number, since it uses as much as digits as its factorization.

12744081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67445 (or 67439 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 12744081 is about 3569.8852922748. The cubic root of 12744081 is about 233.5802798238.

The spelling of 12744081 in words is "twelve million, seven hundred forty-four thousand, eighty-one".