Base | Representation |
---|---|
bin | 110100111001… |
… | …111101100111 |
3 | 222002121120002 |
4 | 310321331213 |
5 | 12022301103 |
6 | 1213131515 |
7 | 225612056 |
oct | 64717547 |
9 | 28077502 |
10 | 13868903 |
11 | 7912a04 |
12 | 4789b9b |
13 | 2b47869 |
14 | 1bb039d |
15 | 133e488 |
hex | d39f67 |
13868903 has 2 divisors, whose sum is σ = 13868904. Its totient is φ = 13868902.
The previous prime is 13868893. The next prime is 13868929. The reversal of 13868903 is 30986831.
It is a weak prime.
It is an emirp because it is prime and its reverse (30986831) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 13868903 - 24 = 13868887 is a prime.
It is a Sophie Germain prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (13808903) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6934451 + 6934452.
It is an arithmetic number, because the mean of its divisors is an integer number (6934452).
Almost surely, 213868903 is an apocalyptic number.
13868903 is a deficient number, since it is larger than the sum of its proper divisors (1).
13868903 is an equidigital number, since it uses as much as digits as its factorization.
13868903 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 31104, while the sum is 38.
The square root of 13868903 is about 3724.0976088175. The cubic root of 13868903 is about 240.2595744774.
The spelling of 13868903 in words is "thirteen million, eight hundred sixty-eight thousand, nine hundred three".
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