12812660 has 48 divisors (see below), whose sum is σ = 31207680. Its totient is φ = 4327680.

The previous prime is 12812647. The next prime is 12812663. The reversal of 12812660 is 6621821.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12812663) 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, 9296 + ... + 10584.

It is an arithmetic number, because the mean of its divisors is an integer number (650160).

Almost surely, 2^12812660 is an apocalyptic number.

12812660 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 12812660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15603840).

12812660 is an abundant number, since it is smaller than the sum of its proper divisors (18395020).

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

12812660 is a wasteful number, since it uses less digits than its factorization.

12812660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376 (or 1374 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 12812660 is about 3579.4776155188. The cubic root of 12812660 is about 233.9985146130.

The spelling of 12812660 in words is "twelve million, eight hundred twelve thousand, six hundred sixty".