13288643 has 4 divisors (see below), whose sum is σ = 13306608. Its totient is φ = 13270680.

The previous prime is 13288631. The next prime is 13288673. The reversal of 13288643 is 34688231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34688231 = 179 ⋅193789.

It is a cyclic number.

It is not a de Polignac number, because 13288643 - 2¹⁰ = 13287619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13288603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7823 + ... + 9368.

It is an arithmetic number, because the mean of its divisors is an integer number (3326652).

Almost surely, 2^13288643 is an apocalyptic number.

13288643 is a deficient number, since it is larger than the sum of its proper divisors (17965).

13288643 is an equidigital number, since it uses as much as digits as its factorization.

13288643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17964.

The product of its digits is 27648, while the sum is 35.

The square root of 13288643 is about 3645.3591043956. The cubic root of 13288643 is about 236.8609925046.

It can be divided in two parts, 13288 and 643, that added together give a palindrome (13931).

The spelling of 13288643 in words is "thirteen million, two hundred eighty-eight thousand, six hundred forty-three".