12729860 has 48 divisors (see below), whose sum is σ = 31413312. Its totient is φ = 4272000.

The previous prime is 12729851. The next prime is 12729863. The reversal of 12729860 is 6892721.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12729860.

It is not an unprimeable number, because it can be changed into a prime (12729863) 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, 635 + ... + 5085.

It is an arithmetic number, because the mean of its divisors is an integer number (654444).

Almost surely, 2^12729860 is an apocalyptic number.

12729860 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 12729860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15706656).

12729860 is an abundant number, since it is smaller than the sum of its proper divisors (18683452).

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

12729860 is a wasteful number, since it uses less digits than its factorization.

12729860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4484 (or 4482 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 12729860 is about 3567.8929356134. The cubic root of 12729860 is about 233.4933641413.

The spelling of 12729860 in words is "twelve million, seven hundred twenty-nine thousand, eight hundred sixty".