12908581 has 16 divisors (see below), whose sum is σ = 15759360. Its totient is φ = 10326960.

The previous prime is 12908579. The next prime is 12908603. The reversal of 12908581 is 18580921.

It is not a de Polignac number, because 12908581 - 2¹ = 12908579 is a prime.

It is a super-2 number, since 2×12908581² = 333262926867122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12908531) 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 15 ways as a sum of consecutive naturals, for example, 8760 + ... + 10126.

It is an arithmetic number, because the mean of its divisors is an integer number (984960).

Almost surely, 2^12908581 is an apocalyptic number.

It is an amenable number.

12908581 is a deficient number, since it is larger than the sum of its proper divisors (2850779).

12908581 is a wasteful number, since it uses less digits than its factorization.

12908581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 12908581 is about 3592.8513746049. The cubic root of 12908581 is about 234.5810007757.

The spelling of 12908581 in words is "twelve million, nine hundred eight thousand, five hundred eighty-one".