Base | Representation |
---|---|
bin | 110000010111… |
… | …010010001111 |
3 | 212212010100012 |
4 | 300113102033 |
5 | 11221201122 |
6 | 1131423435 |
7 | 212522636 |
oct | 60272217 |
9 | 25763305 |
10 | 12678287 |
11 | 717a426 |
12 | 42b4b7b |
13 | 281b95b |
14 | 198051d |
15 | 11a67e2 |
hex | c1748f |
12678287 has 8 divisors (see below), whose sum is σ = 13149312. Its totient is φ = 12211200.
The previous prime is 12678271. The next prime is 12678299. The reversal of 12678287 is 78287621.
12678287 is digitally balanced in base 2 and base 3, because in such bases 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 a cyclic number.
It is not a de Polignac number, because 12678287 - 24 = 12678271 is a prime.
It is a super-2 number, since 2×126782872 = 321477922508738, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12671287) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6623 + ... + 8319.
It is an arithmetic number, because the mean of its divisors is an integer number (1643664).
Almost surely, 212678287 is an apocalyptic number.
12678287 is a deficient number, since it is larger than the sum of its proper divisors (471025).
12678287 is a wasteful number, since it uses less digits than its factorization.
12678287 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1969.
The product of its digits is 75264, while the sum is 41.
The square root of 12678287 is about 3560.6582256656. The cubic root of 12678287 is about 233.1776169666.
The spelling of 12678287 in words is "twelve million, six hundred seventy-eight thousand, two hundred eighty-seven".
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