12897276 has 48 divisors (see below), whose sum is σ = 36207360. Its totient is φ = 3490560.

The previous prime is 12897263. The next prime is 12897277. The reversal of 12897276 is 67279821.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12897277) 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, 2445 + ... + 5636.

It is an arithmetic number, because the mean of its divisors is an integer number (754320).

Almost surely, 2^12897276 is an apocalyptic number.

It is an amenable number.

12897276 is an abundant number, since it is smaller than the sum of its proper divisors (23310084).

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

12897276 is a wasteful number, since it uses less digits than its factorization.

12897276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8114 (or 8112 counting only the distinct ones).

The product of its digits is 84672, while the sum is 42.

The square root of 12897276 is about 3591.2777670350. The cubic root of 12897276 is about 234.5125007922.

The spelling of 12897276 in words is "twelve million, eight hundred ninety-seven thousand, two hundred seventy-six".