12897612 has 144 divisors (see below), whose sum is σ = 41746432. Its totient is φ = 3265920.

The previous prime is 12897593. The next prime is 12897623. The reversal of 12897612 is 21679821.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 101493 + ... + 101619.

Almost surely, 2^12897612 is an apocalyptic number.

12897612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12897612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20873216).

12897612 is an abundant number, since it is smaller than the sum of its proper divisors (28848820).

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

12897612 is a wasteful number, since it uses less digits than its factorization.

12897612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 183 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 12897612 is about 3591.3245467376. The cubic root of 12897612 is about 234.5145372821.

The spelling of 12897612 in words is "twelve million, eight hundred ninety-seven thousand, six hundred twelve".