12671856 has 40 divisors (see below), whose sum is σ = 36374160. Its totient is φ = 4223808.

The previous prime is 12671849. The next prime is 12671861. The reversal of 12671856 is 65817621.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12671856.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14235 + ... + 15098.

It is an arithmetic number, because the mean of its divisors is an integer number (909354).

Almost surely, 2^12671856 is an apocalyptic number.

12671856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12671856 is an abundant number, since it is smaller than the sum of its proper divisors (23702304).

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

12671856 is a wasteful number, since it uses less digits than its factorization.

12671856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29350 (or 29338 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 12671856 is about 3559.7550477526. The cubic root of 12671856 is about 233.1381842242.

The spelling of 12671856 in words is "twelve million, six hundred seventy-one thousand, eight hundred fifty-six".