Base | Representation |
---|---|
bin | 110000110101… |
… | …000011101101 |
3 | 220002022121212 |
4 | 300311003231 |
5 | 11234101422 |
6 | 1134204205 |
7 | 213541322 |
oct | 60650355 |
9 | 26068555 |
10 | 12800237 |
11 | 725300a |
12 | 4353665 |
13 | 2862308 |
14 | 19b2b49 |
15 | 11cc9e2 |
hex | c350ed |
12800237 has 2 divisors, whose sum is σ = 12800238. Its totient is φ = 12800236.
The previous prime is 12800209. The next prime is 12800239. The reversal of 12800237 is 73200821.
12800237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 6817321 + 5982916 = 2611^2 + 2446^2 .
It is a cyclic number.
It is not a de Polignac number, because 12800237 - 26 = 12800173 is a prime.
Together with 12800239, it forms a pair of twin primes.
It is a Chen prime.
It is equal to p837113 and since 12800237 and 837113 have the same sum of digits, it is a Honaker prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (12800239) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6400118 + 6400119.
It is an arithmetic number, because the mean of its divisors is an integer number (6400119).
Almost surely, 212800237 is an apocalyptic number.
It is an amenable number.
12800237 is a deficient number, since it is larger than the sum of its proper divisors (1).
12800237 is an equidigital number, since it uses as much as digits as its factorization.
12800237 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 672, while the sum is 23.
The square root of 12800237 is about 3577.7418856033. The cubic root of 12800237 is about 233.9228627819.
The spelling of 12800237 in words is "twelve million, eight hundred thousand, two hundred thirty-seven".
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