12897434 has 32 divisors (see below), whose sum is σ = 22394880. Its totient is φ = 5513200.

The previous prime is 12897427. The next prime is 12897439. The reversal of 12897434 is 43479821.

It is not an unprimeable number, because it can be changed into a prime (12897439) 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, 35747 + ... + 36105.

It is an arithmetic number, because the mean of its divisors is an integer number (699840).

Almost surely, 2^12897434 is an apocalyptic number.

12897434 is a deficient number, since it is larger than the sum of its proper divisors (9497446).

12897434 is a wasteful number, since it uses less digits than its factorization.

12897434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466.

The product of its digits is 48384, while the sum is 38.

The square root of 12897434 is about 3591.2997647092. The cubic root of 12897434 is about 234.5134584317.

It can be divided in two parts, 12897 and 434, that added together give a palindrome (13331).

The spelling of 12897434 in words is "twelve million, eight hundred ninety-seven thousand, four hundred thirty-four".