12871578 has 8 divisors (see below), whose sum is σ = 25743168. Its totient is φ = 4290524.

The previous prime is 12871543. The next prime is 12871583. The reversal of 12871578 is 87517821.

12871578 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.

12871578 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1072626 + ... + 1072637.

It is an arithmetic number, because the mean of its divisors is an integer number (3217896).

Almost surely, 2^12871578 is an apocalyptic number.

12871578 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.

12871578 is a wasteful number, since it uses less digits than its factorization.

12871578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145268.

The product of its digits is 31360, while the sum is 39.

The square root of 12871578 is about 3587.6981478380. The cubic root of 12871578 is about 234.3566407664.

The spelling of 12871578 in words is "twelve million, eight hundred seventy-one thousand, five hundred seventy-eight".