Base | Representation |
---|---|
bin | 1011100110100011001 |
3 | 201022111221 |
4 | 1130310121 |
5 | 44131220 |
6 | 12052041 |
7 | 3142261 |
oct | 1346431 |
9 | 638457 |
10 | 380185 |
11 | 23a703 |
12 | 164021 |
13 | 104080 |
14 | 9c7a1 |
15 | 779aa |
hex | 5cd19 |
380185 has 8 divisors (see below), whose sum is σ = 491400. Its totient is φ = 280704.
The previous prime is 380179. The next prime is 380189. The reversal of 380185 is 581083.
380185 is nontrivially palindromic in base 8.
It can be written as a sum of positive squares in 4 ways, for example, as 729 + 379456 = 27^2 + 616^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 380185 - 211 = 378137 is a prime.
380185 is a lucky number.
It is a plaindrome in base 15.
It is not an unprimeable number, because it can be changed into a prime (380189) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2860 + ... + 2989.
It is an arithmetic number, because the mean of its divisors is an integer number (61425).
2380185 is an apocalyptic number.
It is an amenable number.
380185 is a deficient number, since it is larger than the sum of its proper divisors (111215).
380185 is a wasteful number, since it uses less digits than its factorization.
380185 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5867.
The product of its (nonzero) digits is 960, while the sum is 25.
The square root of 380185 is about 616.5914368526. The cubic root of 380185 is about 72.4433167726.
It can be divided in two parts, 380 and 185, that added together give a palindrome (565).
The spelling of 380185 in words is "three hundred eighty thousand, one hundred eighty-five".
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