12897858 has 16 divisors (see below), whose sum is σ = 25857216. Its totient is φ = 4289040.

The previous prime is 12897853. The next prime is 12897869. The reversal of 12897858 is 85879821.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12897853) 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, 435 + ... + 5097.

It is an arithmetic number, because the mean of its divisors is an integer number (1616076).

Almost surely, 2^12897858 is an apocalyptic number.

12897858 is an abundant number, since it is smaller than the sum of its proper divisors (12959358).

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

12897858 is a wasteful number, since it uses less digits than its factorization.

12897858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5129.

The product of its digits is 322560, while the sum is 48.

The square root of 12897858 is about 3591.3587957763. The cubic root of 12897858 is about 234.5160282611.

The spelling of 12897858 in words is "twelve million, eight hundred ninety-seven thousand, eight hundred fifty-eight".