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12885 = 35859
BaseRepresentation
bin11001001010101
3122200020
43021111
5403020
6135353
752365
oct31125
918606
1012885
119754
127559
135b32
1449a5
153c40
hex3255

12885 has 8 divisors (see below), whose sum is σ = 20640. Its totient is φ = 6864.

The previous prime is 12853. The next prime is 12889. The reversal of 12885 is 58821.

12885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12885 - 25 = 12853 is a prime.

It is a Curzon number.

12885 is a lucky number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415 + ... + 444.

It is an arithmetic number, because the mean of its divisors is an integer number (2580).

212885 is an apocalyptic number.

12885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12885 is a deficient number, since it is larger than the sum of its proper divisors (7755).

12885 is an equidigital number, since it uses as much as digits as its factorization.

12885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867.

The product of its digits is 640, while the sum is 24.

The square root of 12885 is about 113.5121138910. The cubic root of 12885 is about 23.4438071914.

The spelling of 12885 in words is "twelve thousand, eight hundred eighty-five".

Divisors: 1 3 5 15 859 2577 4295 12885