12861180 has 120 divisors (see below), whose sum is σ = 42810768. Its totient is φ = 3220992.

The previous prime is 12861169. The next prime is 12861203. The reversal of 12861180 is 8116821.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 27307 + ... + 27773.

Almost surely, 2^12861180 is an apocalyptic number.

12861180 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 12861180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21405384).

12861180 is an abundant number, since it is smaller than the sum of its proper divisors (29949588).

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

12861180 is a wasteful number, since it uses less digits than its factorization.

12861180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 12861180 is about 3586.2487364933. The cubic root of 12861180 is about 234.2935172750.

It can be divided in two parts, 12861 and 180, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 12861180 in words is "twelve million, eight hundred sixty-one thousand, one hundred eighty".