12841638 has 8 divisors (see below), whose sum is σ = 25683288. Its totient is φ = 4280544.

The previous prime is 12841637. The next prime is 12841643. The reversal of 12841638 is 83614821.

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

12841638 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 12841599 and 12841608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12841637) 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, 1070131 + ... + 1070142.

It is an arithmetic number, because the mean of its divisors is an integer number (3210411).

Almost surely, 2^12841638 is an apocalyptic number.

12841638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12841638 is a wasteful number, since it uses less digits than its factorization.

12841638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140278.

The product of its digits is 9216, while the sum is 33.

The square root of 12841638 is about 3583.5231267567. The cubic root of 12841638 is about 234.1747908738.

The spelling of 12841638 in words is "twelve million, eight hundred forty-one thousand, six hundred thirty-eight".