12881660 has 36 divisors (see below), whose sum is σ = 29739864. Its totient is φ = 4683360.

The previous prime is 12881657. The next prime is 12881663. The reversal of 12881660 is 6618821.

It is an interprime number because it is at equal distance from previous prime (12881657) and next prime (12881663).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12881663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 242 + ... + 5081.

Almost surely, 2^12881660 is an apocalyptic number.

12881660 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 12881660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14869932).

12881660 is an abundant number, since it is smaller than the sum of its proper divisors (16858204).

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

12881660 is a wasteful number, since it uses less digits than its factorization.

12881660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5354 (or 5341 counting only the distinct ones).

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

The square root of 12881660 is about 3589.1029519923. The cubic root of 12881660 is about 234.4178134528.

The spelling of 12881660 in words is "twelve million, eight hundred eighty-one thousand, six hundred sixty".