12788366 has 4 divisors (see below), whose sum is σ = 19182552. Its totient is φ = 6394182.

The previous prime is 12788353. The next prime is 12788389. The reversal of 12788366 is 66388721.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3197090 + ... + 3197093.

It is an arithmetic number, because the mean of its divisors is an integer number (4795638).

Almost surely, 2^12788366 is an apocalyptic number.

12788366 is a deficient number, since it is larger than the sum of its proper divisors (6394186).

12788366 is an equidigital number, since it uses as much as digits as its factorization.

12788366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6394185.

The product of its digits is 96768, while the sum is 41.

The square root of 12788366 is about 3576.0824934557. The cubic root of 12788366 is about 233.8505266946.

The spelling of 12788366 in words is "twelve million, seven hundred eighty-eight thousand, three hundred sixty-six".