12858 has 8 divisors (see below), whose sum is σ = 25728. Its totient is φ = 4284.

The previous prime is 12853. The next prime is 12889. The reversal of 12858 is 85821.

12858 is digitally balanced in base 2, because in such base 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.

12858 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1066 + ... + 1077.

It is an arithmetic number, because the mean of its divisors is an integer number (3216).

2¹²⁸⁵⁸ is an apocalyptic number.

12858 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12864).

12858 is a wasteful number, since it uses less digits than its factorization.

12858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148.

The product of its digits is 640, while the sum is 24.

The square root of 12858 is about 113.3931214845. The cubic root of 12858 is about 23.4274205548.

It can be divided in two parts, 12 and 858, that multiplied together give a triangular number (10296 = T₁₄₃).

The spelling of 12858 in words is "twelve thousand, eight hundred fifty-eight".