12643104 has 96 divisors (see below), whose sum is σ = 35997696. Its totient is φ = 3870720.

The previous prime is 12643049. The next prime is 12643109. The reversal of 12643104 is 40134621.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12643109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99489 + ... + 99615.

It is an arithmetic number, because the mean of its divisors is an integer number (374976).

Almost surely, 2^12643104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12643104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17998848).

12643104 is an abundant number, since it is smaller than the sum of its proper divisors (23354592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12643104 is a wasteful number, since it uses less digits than its factorization.

12643104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 12643104 is about 3555.7142742352. The cubic root of 12643104 is about 232.9617232217.

Adding to 12643104 its reverse (40134621), we get a palindrome (52777725).

The spelling of 12643104 in words is "twelve million, six hundred forty-three thousand, one hundred four".