12788544 has 56 divisors (see below), whose sum is σ = 34645600. Its totient is φ = 4161024.

The previous prime is 12788543. The next prime is 12788563. The reversal of 12788544 is 44588721.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12788543) 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, 7482 + ... + 9030.

Almost surely, 2^12788544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12788544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17322800).

12788544 is an abundant number, since it is smaller than the sum of its proper divisors (21857056).

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

12788544 is a wasteful number, since it uses less digits than its factorization.

12788544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607 (or 1597 counting only the distinct ones).

The product of its digits is 71680, while the sum is 39.

The square root of 12788544 is about 3576.1073809381. The cubic root of 12788544 is about 233.8516116703.

The spelling of 12788544 in words is "twelve million, seven hundred eighty-eight thousand, five hundred forty-four".