Base | Representation |
---|---|
bin | 111111101010101000101 |
3 | 10220222202011 |
4 | 13331111011 |
5 | 1013224323 |
6 | 112414221 |
7 | 23506153 |
oct | 7752505 |
9 | 3828664 |
10 | 2086213 |
11 | 11a5448 |
12 | 847371 |
13 | 58075c |
14 | 3c43d3 |
15 | 2b320d |
hex | 1fd545 |
2086213 has 2 divisors, whose sum is σ = 2086214. Its totient is φ = 2086212.
The previous prime is 2086211. The next prime is 2086243. The reversal of 2086213 is 3126802.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 1633284 + 452929 = 1278^2 + 673^2 .
It is a cyclic number.
It is not a de Polignac number, because 2086213 - 21 = 2086211 is a prime.
Together with 2086211, it forms a pair of twin primes.
2086213 is a lucky number.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (2086211) 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 as a sum of consecutive naturals, namely, 1043106 + 1043107.
It is an arithmetic number, because the mean of its divisors is an integer number (1043107).
22086213 is an apocalyptic number.
It is an amenable number.
2086213 is a deficient number, since it is larger than the sum of its proper divisors (1).
2086213 is an equidigital number, since it uses as much as digits as its factorization.
2086213 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 576, while the sum is 22.
The square root of 2086213 is about 1444.3728742953. The cubic root of 2086213 is about 127.7770573928. Note that the first 3 decimals are identical.
The spelling of 2086213 in words is "two million, eighty-six thousand, two hundred thirteen".
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