Base | Representation |
---|---|
bin | 111001111101… |
… | …0011000110101 |
3 | 2010011202100221 |
4 | 1303322120311 |
5 | 30234320332 |
6 | 3003134341 |
7 | 516163045 |
oct | 163723065 |
9 | 63152327 |
10 | 30385717 |
11 | 1617426a |
12 | a2143b1 |
13 | 63ab71b |
14 | 406d725 |
15 | 2a03297 |
hex | 1cfa635 |
30385717 has 2 divisors, whose sum is σ = 30385718. Its totient is φ = 30385716.
The previous prime is 30385711. The next prime is 30385741. The reversal of 30385717 is 71758303.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 15570916 + 14814801 = 3946^2 + 3849^2 .
It is an emirp because it is prime and its reverse (71758303) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30385717 - 23 = 30385709 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30385711) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15192858 + 15192859.
It is an arithmetic number, because the mean of its divisors is an integer number (15192859).
Almost surely, 230385717 is an apocalyptic number.
It is an amenable number.
30385717 is a deficient number, since it is larger than the sum of its proper divisors (1).
30385717 is an equidigital number, since it uses as much as digits as its factorization.
30385717 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 17640, while the sum is 34.
The square root of 30385717 is about 5512.3241015020. The cubic root of 30385717 is about 312.0492642185.
The spelling of 30385717 in words is "thirty million, three hundred eighty-five thousand, seven hundred seventeen".
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