12744533 has 4 divisors (see below), whose sum is σ = 12887820. Its totient is φ = 12601248.

The previous prime is 12744527. The next prime is 12744569. The reversal of 12744533 is 33544721.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 786769 + 11957764 = 887^2 + 3458^2 .

It is a cyclic number.

It is not a de Polignac number, because 12744533 - 2¹⁸ = 12482389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12744496 and 12744505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12744583) 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, 71510 + ... + 71687.

It is an arithmetic number, because the mean of its divisors is an integer number (3221955).

Almost surely, 2^12744533 is an apocalyptic number.

It is an amenable number.

12744533 is a deficient number, since it is larger than the sum of its proper divisors (143287).

12744533 is an equidigital number, since it uses as much as digits as its factorization.

12744533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143286.

The product of its digits is 10080, while the sum is 29.

The square root of 12744533 is about 3569.9485990697. The cubic root of 12744533 is about 233.5830412898.

The spelling of 12744533 in words is "twelve million, seven hundred forty-four thousand, five hundred thirty-three".