13122847 has 4 divisors (see below), whose sum is σ = 13146480. Its totient is φ = 13099216.

The previous prime is 13122841. The next prime is 13122871. The reversal of 13122847 is 74822131.

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

It is a cyclic number.

It is not a de Polignac number, because 13122847 - 2¹¹ = 13120799 is a prime.

It is a super-2 number, since 2×13122847² = 344418226770818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13122841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10963 + ... + 12100.

It is an arithmetic number, because the mean of its divisors is an integer number (3286620).

Almost surely, 2^13122847 is an apocalyptic number.

13122847 is a deficient number, since it is larger than the sum of its proper divisors (23633).

13122847 is an equidigital number, since it uses as much as digits as its factorization.

13122847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23632.

The product of its digits is 2688, while the sum is 28.

The square root of 13122847 is about 3622.5470321308. The cubic root of 13122847 is about 235.8718002849.

Adding to 13122847 its reverse (74822131), we get a palindrome (87944978).

The spelling of 13122847 in words is "thirteen million, one hundred twenty-two thousand, eight hundred forty-seven".