12870491 has 4 divisors (see below), whose sum is σ = 12899112. Its totient is φ = 12841872.

The previous prime is 12870469. The next prime is 12870493. The reversal of 12870491 is 19407821.

12870491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19407821 = 61 ⋅318161.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12870491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12870493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13625 + ... + 14538.

It is an arithmetic number, because the mean of its divisors is an integer number (3224778).

Almost surely, 2^12870491 is an apocalyptic number.

12870491 is a deficient number, since it is larger than the sum of its proper divisors (28621).

12870491 is an equidigital number, since it uses as much as digits as its factorization.

12870491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28620.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 12870491 is about 3587.5466547489. The cubic root of 12870491 is about 234.3500434701.

The spelling of 12870491 in words is "twelve million, eight hundred seventy thousand, four hundred ninety-one".