12856158 has 48 divisors (see below), whose sum is σ = 33022080. Its totient is φ = 3672216.

The previous prime is 12856153. The next prime is 12856163. The reversal of 12856158 is 85165821.

12856158 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12856153) and next prime (12856163).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12856153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1513 + ... + 5291.

It is an arithmetic number, because the mean of its divisors is an integer number (687960).

Almost surely, 2^12856158 is an apocalyptic number.

12856158 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12856158 is the 2268-th heptagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12856158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16511040).

12856158 is an abundant number, since it is smaller than the sum of its proper divisors (20165922).

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

12856158 is an equidigital number, since it uses as much as digits as its factorization.

12856158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3803 (or 3791 counting only the distinct ones).

The product of its digits is 19200, while the sum is 36.

The square root of 12856158 is about 3585.5484936060. The cubic root of 12856158 is about 234.2630178645.

The spelling of 12856158 in words is "twelve million, eight hundred fifty-six thousand, one hundred fifty-eight".