12000858 has 8 divisors (see below), whose sum is σ = 24001728. Its totient is φ = 4000284.

The previous prime is 12000851. The next prime is 12000881. The reversal of 12000858 is 85800021.

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

12000858 is an admirable number.

12000858 is a modest number, since divided by 858 gives 12 as remainder.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12000851) 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, 1000066 + ... + 1000077.

It is an arithmetic number, because the mean of its divisors is an integer number (3000216).

Almost surely, 2^12000858 is an apocalyptic number.

12000858 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.

12000858 is a wasteful number, since it uses less digits than its factorization.

12000858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000148.

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

The square root of 12000858 is about 3464.2254545569. The cubic root of 12000858 is about 228.9483048518.

Adding to 12000858 its reverse (85800021), we get a palindrome (97800879).

The spelling of 12000858 in words is "twelve million, eight hundred fifty-eight", and thus it is an aban number.