12861860 has 96 divisors (see below), whose sum is σ = 33022080. Its totient is φ = 4147200.

The previous prime is 12861857. The next prime is 12861887. The reversal of 12861860 is 6816821.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70970 + ... + 71150.

It is an arithmetic number, because the mean of its divisors is an integer number (343980).

Almost surely, 2^12861860 is an apocalyptic number.

12861860 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 12861860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16511040).

12861860 is an abundant number, since it is smaller than the sum of its proper divisors (20160220).

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

12861860 is a wasteful number, since it uses less digits than its factorization.

12861860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 12861860 is about 3586.3435418264. The cubic root of 12861860 is about 234.2976464136.

The spelling of 12861860 in words is "twelve million, eight hundred sixty-one thousand, eight hundred sixty".