Base | Representation |
---|---|
bin | 111010110101… |
… | …0010001100101 |
3 | 2011001001000120 |
4 | 1311222101211 |
5 | 30344002010 |
6 | 3021032153 |
7 | 523112133 |
oct | 165522145 |
9 | 64031016 |
10 | 30844005 |
11 | 16457615 |
12 | a3b5659 |
13 | 650c1ba |
14 | 414c753 |
15 | 2a93e70 |
hex | 1d6a465 |
30844005 has 16 divisors (see below), whose sum is σ = 49603200. Its totient is φ = 16365888.
The previous prime is 30843991. The next prime is 30844007. The reversal of 30844005 is 50044803.
It is a happy number.
It is not a de Polignac number, because 30844005 - 26 = 30843941 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30844007) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2182 + ... + 8151.
It is an arithmetic number, because the mean of its divisors is an integer number (3100200).
Almost surely, 230844005 is an apocalyptic number.
It is an amenable number.
30844005 is a deficient number, since it is larger than the sum of its proper divisors (18759195).
30844005 is a wasteful number, since it uses less digits than its factorization.
30844005 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10540.
The product of its (nonzero) digits is 1920, while the sum is 24.
The square root of 30844005 is about 5553.7379304393. The cubic root of 30844005 is about 313.6102545335.
Adding to 30844005 its reverse (50044803), we get a palindrome (80888808).
The spelling of 30844005 in words is "thirty million, eight hundred forty-four thousand, five".
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