12788541 has 6 divisors (see below), whose sum is σ = 18472350. Its totient is φ = 8525688.

The previous prime is 12788527. The next prime is 12788543. The reversal of 12788541 is 14588721.

12788541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7128900 + 5659641 = 2670^2 + 2379^2 .

It is not a de Polignac number, because 12788541 - 2¹¹ = 12786493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12788496 and 12788505.

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 5 ways as a sum of consecutive naturals, for example, 710466 + ... + 710483.

It is an arithmetic number, because the mean of its divisors is an integer number (3078725).

Almost surely, 2^12788541 is an apocalyptic number.

It is an amenable number.

12788541 is a deficient number, since it is larger than the sum of its proper divisors (5683809).

12788541 is a wasteful number, since it uses less digits than its factorization.

12788541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420955 (or 1420952 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 12788541 is about 3576.1069614876. The cubic root of 12788541 is about 233.8515933843.

The spelling of 12788541 in words is "twelve million, seven hundred eighty-eight thousand, five hundred forty-one".