12788546 has 4 divisors (see below), whose sum is σ = 19182822. Its totient is φ = 6394272.

The previous prime is 12788543. The next prime is 12788563. The reversal of 12788546 is 64588721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12780625 + 7921 = 3575^2 + 89^2 .

It is a Curzon 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 as a sum of consecutive naturals, namely, 3197135 + ... + 3197138.

Almost surely, 2^12788546 is an apocalyptic number.

12788546 is a deficient number, since it is larger than the sum of its proper divisors (6394276).

12788546 is an equidigital number, since it uses as much as digits as its factorization.

12788546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6394275.

The product of its digits is 107520, while the sum is 41.

The square root of 12788546 is about 3576.1076605718. The cubic root of 12788546 is about 233.8516238610.

The spelling of 12788546 in words is "twelve million, seven hundred eighty-eight thousand, five hundred forty-six".