Base | Representation |
---|---|
bin | 110100101101… |
… | …100010100111 |
3 | 222000000202122 |
4 | 310231202213 |
5 | 12014134043 |
6 | 1212100155 |
7 | 225310532 |
oct | 64554247 |
9 | 28000678 |
10 | 13818023 |
11 | 788875a |
12 | 476465b |
13 | 2b2a65b |
14 | 1b99a19 |
15 | 132e368 |
hex | d2d8a7 |
13818023 has 2 divisors, whose sum is σ = 13818024. Its totient is φ = 13818022.
The previous prime is 13818017. The next prime is 13818043. The reversal of 13818023 is 32081831.
It is a weak prime.
It is an emirp because it is prime and its reverse (32081831) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 13818023 - 212 = 13813927 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 13817983 and 13818001.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (13818043) 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, 6909011 + 6909012.
It is an arithmetic number, because the mean of its divisors is an integer number (6909012).
Almost surely, 213818023 is an apocalyptic number.
13818023 is a deficient number, since it is larger than the sum of its proper divisors (1).
13818023 is an equidigital number, since it uses as much as digits as its factorization.
13818023 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 1152, while the sum is 26.
The square root of 13818023 is about 3717.2601469362. The cubic root of 13818023 is about 239.9654058934.
Adding to 13818023 its reverse (32081831), we get a palindrome (45899854).
The spelling of 13818023 in words is "thirteen million, eight hundred eighteen thousand, twenty-three".
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