12861258 has 8 divisors (see below), whose sum is σ = 25722528. Its totient is φ = 4287084.

The previous prime is 12861241. The next prime is 12861259. The reversal of 12861258 is 85216821.

12861258 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.

12861258 is an admirable number.

It is a super-4 number, since 4×12861258⁴ (a number of 30 digits) contains 4444 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12861259) 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, 1071766 + ... + 1071777.

It is an arithmetic number, because the mean of its divisors is an integer number (3215316).

Almost surely, 2^12861258 is an apocalyptic number.

12861258 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.

12861258 is a wasteful number, since it uses less digits than its factorization.

12861258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143548.

The product of its digits is 7680, while the sum is 33.

The square root of 12861258 is about 3586.2596113500. The cubic root of 12861258 is about 234.2939909189.

The spelling of 12861258 in words is "twelve million, eight hundred sixty-one thousand, two hundred fifty-eight".