Base | Representation |
---|---|
bin | 110100110000… |
… | …101010010101 |
3 | 222000200022001 |
4 | 310300222111 |
5 | 12020041210 |
6 | 1212235301 |
7 | 225363022 |
oct | 64605225 |
9 | 28020261 |
10 | 13830805 |
11 | 789731a |
12 | 476bb31 |
13 | 2b33411 |
14 | 1ba0549 |
15 | 133303a |
hex | d30a95 |
13830805 has 8 divisors (see below), whose sum is σ = 17132544. Its totient is φ = 10707600.
The previous prime is 13830787. The next prime is 13830811. The reversal of 13830805 is 50803831.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 13830805 - 217 = 13699733 is a prime.
It is a Duffinian number.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44461 + ... + 44770.
It is an arithmetic number, because the mean of its divisors is an integer number (2141568).
Almost surely, 213830805 is an apocalyptic number.
It is an amenable number.
13830805 is a deficient number, since it is larger than the sum of its proper divisors (3301739).
13830805 is an equidigital number, since it uses as much as digits as its factorization.
13830805 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 89267.
The product of its (nonzero) digits is 2880, while the sum is 28.
The square root of 13830805 is about 3718.9790265609. The cubic root of 13830805 is about 240.0393743269.
The spelling of 13830805 in words is "thirteen million, eight hundred thirty thousand, eight hundred five".
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