Base | Representation |
---|---|
bin | 11000110010111… |
… | …01010000000111 |
3 | 112111101111100222 |
4 | 30121131100013 |
5 | 411222000012 |
6 | 32350054555 |
7 | 5103654005 |
oct | 1431352007 |
9 | 474344328 |
10 | 208000007 |
11 | a7457536 |
12 | 597aa45b |
13 | 34128737 |
14 | 1d8a5a75 |
15 | 133d9972 |
hex | c65d407 |
208000007 has 2 divisors, whose sum is σ = 208000008. Its totient is φ = 208000006.
The previous prime is 207999997. The next prime is 208000021. The reversal of 208000007 is 700000802.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 208000007 - 26 = 207999943 is a prime.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (208000207) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104000003 + 104000004.
It is an arithmetic number, because the mean of its divisors is an integer number (104000004).
Almost surely, 2208000007 is an apocalyptic number.
208000007 is a deficient number, since it is larger than the sum of its proper divisors (1).
208000007 is an equidigital number, since it uses as much as digits as its factorization.
208000007 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 112, while the sum is 17.
The square root of 208000007 is about 14422.2053445373. The cubic root of 208000007 is about 592.4992203281.
Adding to 208000007 its reverse (700000802), we get a palindrome (908000809).
The spelling of 208000007 in words is "two hundred eight million, seven", and thus it is an aban number.
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