12805860 has 48 divisors (see below), whose sum is σ = 36542016. Its totient is φ = 3349632.

The previous prime is 12805853. The next prime is 12805861. The reversal of 12805860 is 6850821.

12805860 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12805861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1167 + ... + 5193.

It is an arithmetic number, because the mean of its divisors is an integer number (761292).

Almost surely, 2^12805860 is an apocalyptic number.

12805860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12805860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18271008).

12805860 is an abundant number, since it is smaller than the sum of its proper divisors (23736156).

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

12805860 is a wasteful number, since it uses less digits than its factorization.

12805860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4092 (or 4090 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 12805860 is about 3578.5276301854. The cubic root of 12805860 is about 233.9571109941.

It can be divided in two parts, 1280 and 5860, that added together give a triangular number (7140 = T₁₁₉).

The spelling of 12805860 in words is "twelve million, eight hundred five thousand, eight hundred sixty".