12865880 has 16 divisors (see below), whose sum is σ = 28948320. Its totient is φ = 5146336.

The previous prime is 12865871. The next prime is 12865883. The reversal of 12865880 is 8856821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12865883) 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, 160784 + ... + 160863.

It is an arithmetic number, because the mean of its divisors is an integer number (1809270).

Almost surely, 2^12865880 is an apocalyptic number.

12865880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12865880 is an abundant number, since it is smaller than the sum of its proper divisors (16082440).

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

12865880 is a wasteful number, since it uses less digits than its factorization.

12865880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321658 (or 321654 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 12865880 is about 3586.9039574541. The cubic root of 12865880 is about 234.3220539365.

The spelling of 12865880 in words is "twelve million, eight hundred sixty-five thousand, eight hundred eighty".