12861760 has 28 divisors (see below), whose sum is σ = 30627828. Its totient is φ = 5144576.

The previous prime is 12861743. The next prime is 12861767. The reversal of 12861760 is 6716821.

It can be written as a sum of positive squares in 2 ways, for example, as 3717184 + 9144576 = 1928^2 + 3024^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12861767) 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, 19777 + ... + 20416.

It is an arithmetic number, because the mean of its divisors is an integer number (1093851).

Almost surely, 2^12861760 is an apocalyptic number.

12861760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12861760 is an abundant number, since it is smaller than the sum of its proper divisors (17766068).

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

12861760 is an equidigital number, since it uses as much as digits as its factorization.

12861760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40210 (or 40200 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 12861760 is about 3586.3296000228. The cubic root of 12861760 is about 234.2970391965.

The spelling of 12861760 in words is "twelve million, eight hundred sixty-one thousand, seven hundred sixty".