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12887 = 72263
BaseRepresentation
bin11001001010111
3122200022
43021113
5403022
6135355
752400
oct31127
918608
1012887
119756
12755b
135b34
1449a7
153c42
hex3257

12887 has 6 divisors (see below), whose sum is σ = 15048. Its totient is φ = 11004.

The previous prime is 12853. The next prime is 12889. The reversal of 12887 is 78821.

It is not a de Polignac number, because 12887 - 26 = 12823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 12887.

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

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 83 + ... + 180.

It is an arithmetic number, because the mean of its divisors is an integer number (2508).

212887 is an apocalyptic number.

12887 is a deficient number, since it is larger than the sum of its proper divisors (2161).

12887 is an equidigital number, since it uses as much as digits as its factorization.

12887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 270 counting only the distinct ones).

The product of its digits is 896, while the sum is 26.

The square root of 12887 is about 113.5209231816. The cubic root of 12887 is about 23.4450201054.

The spelling of 12887 in words is "twelve thousand, eight hundred eighty-seven".

Divisors: 1 7 49 263 1841 12887