12897648 has 30 divisors (see below), whose sum is σ = 36095904. Its totient is φ = 4299168.

The previous prime is 12897631. The next prime is 12897649. The reversal of 12897648 is 84679821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12897649) 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 5 ways as a sum of consecutive naturals, for example, 44640 + ... + 44927.

Almost surely, 2^12897648 is an apocalyptic number.

12897648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12897648 is an abundant number, since it is smaller than the sum of its proper divisors (23198256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12897648 is a wasteful number, since it uses less digits than its factorization.

12897648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89581 (or 89572 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 12897648 is about 3591.3295588124. The cubic root of 12897648 is about 234.5147554753.

The spelling of 12897648 in words is "twelve million, eight hundred ninety-seven thousand, six hundred forty-eight".