12897435 has 16 divisors (see below), whose sum is σ = 20869920. Its totient is φ = 6800640.

The previous prime is 12897427. The next prime is 12897439. The reversal of 12897435 is 53479821.

12897435 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12897435 - 2³ = 12897427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12897393 and 12897402.

It is not an unprimeable number, because it can be changed into a prime (12897439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3496 + ... + 6165.

It is an arithmetic number, because the mean of its divisors is an integer number (1304370).

Almost surely, 2^12897435 is an apocalyptic number.

12897435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12897435 is a deficient number, since it is larger than the sum of its proper divisors (7972485).

12897435 is an equidigital number, since it uses as much as digits as its factorization.

12897435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9758.

The product of its digits is 60480, while the sum is 39.

The square root of 12897435 is about 3591.2999039345. The cubic root of 12897435 is about 234.5134644927.

The spelling of 12897435 in words is "twelve million, eight hundred ninety-seven thousand, four hundred thirty-five".