12819860 has 12 divisors (see below), whose sum is σ = 26921748. Its totient is φ = 5127936.

The previous prime is 12819857. The next prime is 12819869. The reversal of 12819860 is 6891821.

12819860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6091024 + 6728836 = 2468^2 + 2594^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12819860.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12819869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320477 + ... + 320516.

It is an arithmetic number, because the mean of its divisors is an integer number (2243479).

Almost surely, 2^12819860 is an apocalyptic number.

12819860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12819860 is an abundant number, since it is smaller than the sum of its proper divisors (14101888).

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

12819860 is a wasteful number, since it uses less digits than its factorization.

12819860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641002 (or 641000 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 12819860 is about 3580.4832076132. The cubic root of 12819860 is about 234.0423377748.

The spelling of 12819860 in words is "twelve million, eight hundred nineteen thousand, eight hundred sixty".