12818047 has 8 divisors (see below), whose sum is σ = 14141520. Its totient is φ = 11520960.

The previous prime is 12817979. The next prime is 12818053. The reversal of 12818047 is 74081821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-12818047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12818347) 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, 5568 + ... + 7525.

It is an arithmetic number, because the mean of its divisors is an integer number (1767690).

Almost surely, 2^12818047 is an apocalyptic number.

12818047 is a deficient number, since it is larger than the sum of its proper divisors (1323473).

12818047 is a wasteful number, since it uses less digits than its factorization.

12818047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13193.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 12818047 is about 3580.2300205434. The cubic root of 12818047 is about 234.0313044052.

Adding to 12818047 its reverse (74081821), we get a palindrome (86899868).

The spelling of 12818047 in words is "twelve million, eight hundred eighteen thousand, forty-seven".