12886491 has 8 divisors (see below), whose sum is σ = 17296384. Its totient is φ = 8533800.

The previous prime is 12886487. The next prime is 12886499. The reversal of 12886491 is 19468821.

12886491 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12886491 - 2² = 12886487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12886499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13771 + ... + 14676.

It is an arithmetic number, because the mean of its divisors is an integer number (2162048).

Almost surely, 2^12886491 is an apocalyptic number.

12886491 is a deficient number, since it is larger than the sum of its proper divisors (4409893).

12886491 is a wasteful number, since it uses less digits than its factorization.

12886491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28601.

The product of its digits is 27648, while the sum is 39.

The square root of 12886491 is about 3589.7758982978. The cubic root of 12886491 is about 234.4471143068.

The spelling of 12886491 in words is "twelve million, eight hundred eighty-six thousand, four hundred ninety-one".