12877856 has 24 divisors (see below), whose sum is σ = 26229420. Its totient is φ = 6216448.

The previous prime is 12877847. The next prime is 12877883. The reversal of 12877856 is 65877821.

It can be written as a sum of positive squares in 2 ways, for example, as 12138256 + 739600 = 3484^2 + 860^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6011 + ... + 7866.

Almost surely, 2^12877856 is an apocalyptic number.

12877856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12877856 is an abundant number, since it is smaller than the sum of its proper divisors (13351564).

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

12877856 is a wasteful number, since it uses less digits than its factorization.

12877856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13916 (or 13908 counting only the distinct ones).

The product of its digits is 188160, while the sum is 44.

The square root of 12877856 is about 3588.5729754319. The cubic root of 12877856 is about 234.3947363765.

The spelling of 12877856 in words is "twelve million, eight hundred seventy-seven thousand, eight hundred fifty-six".