12744747 has 12 divisors (see below), whose sum is σ = 19492200. Its totient is φ = 7996608.

The previous prime is 12744709. The next prime is 12744749. The reversal of 12744747 is 74744721.

It is not a de Polignac number, because 12744747 - 2⁷ = 12744619 is a prime.

It is a super-3 number, since 3×12744747³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12744749) 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 11 ways as a sum of consecutive naturals, for example, 41497 + ... + 41802.

It is an arithmetic number, because the mean of its divisors is an integer number (1624350).

Almost surely, 2^12744747 is an apocalyptic number.

12744747 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12744747 is a deficient number, since it is larger than the sum of its proper divisors (6747453).

12744747 is a wasteful number, since it uses less digits than its factorization.

12744747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83322 (or 83319 counting only the distinct ones).

The product of its digits is 43904, while the sum is 36.

The square root of 12744747 is about 3569.9785713643. The cubic root of 12744747 is about 233.5843486867.

The spelling of 12744747 in words is "twelve million, seven hundred forty-four thousand, seven hundred forty-seven".