12897528 has 32 divisors (see below), whose sum is σ = 36850560. Its totient is φ = 3684960.

The previous prime is 12897499. The next prime is 12897529. The reversal of 12897528 is 82579821.

12897528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12897528.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12897529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38218 + ... + 38553.

It is an arithmetic number, because the mean of its divisors is an integer number (1151580).

Almost surely, 2^12897528 is an apocalyptic number.

It is an amenable number.

12897528 is an abundant number, since it is smaller than the sum of its proper divisors (23953032).

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

12897528 is a wasteful number, since it uses less digits than its factorization.

12897528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76787 (or 76783 counting only the distinct ones).

The product of its digits is 80640, while the sum is 42.

The square root of 12897528 is about 3591.3128518691. The cubic root of 12897528 is about 234.5140281629.

The spelling of 12897528 in words is "twelve million, eight hundred ninety-seven thousand, five hundred twenty-eight".