12786433 has 6 divisors (see below), whose sum is σ = 14054642. Its totient is φ = 11623920.

The previous prime is 12786427. The next prime is 12786439. The reversal of 12786433 is 33468721.

It is a happy number.

12786433 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12786427) and next prime (12786439).

It can be written as a sum of positive squares in only one way, i.e., 12159169 + 627264 = 3487^2 + 792^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12786433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12786439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52716 + ... + 52957.

Almost surely, 2^12786433 is an apocalyptic number.

It is an amenable number.

12786433 is a deficient number, since it is larger than the sum of its proper divisors (1268209).

12786433 is a wasteful number, since it uses less digits than its factorization.

12786433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105695 (or 105684 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 12786433 is about 3575.8122154274. The cubic root of 12786433 is about 233.8387436973.

The spelling of 12786433 in words is "twelve million, seven hundred eighty-six thousand, four hundred thirty-three".