Base | Representation |
---|---|
bin | 111010111101… |
… | …0011010011001 |
3 | 2011011101200201 |
4 | 1311322122121 |
5 | 30403110410 |
6 | 3022302201 |
7 | 523505632 |
oct | 165723231 |
9 | 64141621 |
10 | 30910105 |
11 | 164a2246 |
12 | a427961 |
13 | 6533305 |
14 | 4168889 |
15 | 2aa883a |
hex | 1d7a699 |
30910105 has 16 divisors (see below), whose sum is σ = 38320128. Its totient is φ = 23920000.
The previous prime is 30910039. The next prime is 30910147. The reversal of 30910105 is 50101903.
It is not a de Polignac number, because 30910105 - 217 = 30779033 is a prime.
It is a super-2 number, since 2×309101052 = 1910869182222050, which contains 22 as substring.
It is a Duffinian number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26280 + ... + 27430.
It is an arithmetic number, because the mean of its divisors is an integer number (2395008).
Almost surely, 230910105 is an apocalyptic number.
It is an amenable number.
30910105 is a deficient number, since it is larger than the sum of its proper divisors (7410023).
30910105 is a wasteful number, since it uses less digits than its factorization.
30910105 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1328.
The product of its (nonzero) digits is 135, while the sum is 19.
The square root of 30910105 is about 5559.6856925549. The cubic root of 30910105 is about 313.8341213462.
The spelling of 30910105 in words is "thirty million, nine hundred ten thousand, one hundred five".
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