12873891 has 8 divisors (see below), whose sum is σ = 17629264. Its totient is φ = 8350560.

The previous prime is 12873871. The next prime is 12873943. The reversal of 12873891 is 19837821.

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

It is not a de Polignac number, because 12873891 - 2⁶ = 12873827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12873841) 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, 57880 + ... + 58101.

It is an arithmetic number, because the mean of its divisors is an integer number (2203658).

Almost surely, 2^12873891 is an apocalyptic number.

12873891 is a deficient number, since it is larger than the sum of its proper divisors (4755373).

12873891 is a wasteful number, since it uses less digits than its factorization.

12873891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116021.

The product of its digits is 24192, while the sum is 39.

The square root of 12873891 is about 3588.0204848914. The cubic root of 12873891 is about 234.3706777514.

The spelling of 12873891 in words is "twelve million, eight hundred seventy-three thousand, eight hundred ninety-one".