12899760 has 80 divisors (see below), whose sum is σ = 40711680. Its totient is φ = 3377920.

The previous prime is 12899759. The next prime is 12899773. The reversal of 12899760 is 6799821.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13705 + ... + 14615.

It is an arithmetic number, because the mean of its divisors is an integer number (508896).

Almost surely, 2^12899760 is an apocalyptic number.

12899760 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 12899760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20355840).

12899760 is an abundant number, since it is smaller than the sum of its proper divisors (27811920).

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

12899760 is a wasteful number, since it uses less digits than its factorization.

12899760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986 (or 980 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 12899760 is about 3591.6235882954. The cubic root of 12899760 is about 234.5275554352.

The spelling of 12899760 in words is "twelve million, eight hundred ninety-nine thousand, seven hundred sixty".