12865860 has 72 divisors (see below), whose sum is σ = 44606016. Its totient is φ = 2940480.

The previous prime is 12865859. The next prime is 12865871. The reversal of 12865860 is 6856821.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3846 + ... + 6365.

It is an arithmetic number, because the mean of its divisors is an integer number (619528).

Almost surely, 2^12865860 is an apocalyptic number.

12865860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12865860 is an abundant number, since it is smaller than the sum of its proper divisors (31740156).

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

12865860 is a wasteful number, since it uses less digits than its factorization.

12865860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10233 (or 10228 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 12865860 is about 3586.9011695334. The cubic root of 12865860 is about 234.3219325186.

The spelling of 12865860 in words is "twelve million, eight hundred sixty-five thousand, eight hundred sixty".