Base | Representation |
---|---|
bin | 110001101100… |
… | …110000010001 |
3 | 220111220120012 |
4 | 301230300101 |
5 | 11313401434 |
6 | 1143124305 |
7 | 215511404 |
oct | 61546021 |
9 | 26456505 |
10 | 13028369 |
11 | 7399452 |
12 | 4443695 |
13 | 29120c3 |
14 | 1a31d3b |
15 | 12253ce |
hex | c6cc11 |
13028369 has 2 divisors, whose sum is σ = 13028370. Its totient is φ = 13028368.
The previous prime is 13028363. The next prime is 13028371. The reversal of 13028369 is 96382031.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 6838225 + 6190144 = 2615^2 + 2488^2 .
It is an emirp because it is prime and its reverse (96382031) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-13028369 is a prime.
It is a super-2 number, since 2×130283692 = 339476797600322, which contains 22 as substring.
It is a Sophie Germain prime.
Together with 13028371, it forms a pair of twin primes.
It is a Chen prime.
It is a Curzon number.
It is not a weakly prime, because it can be changed into another prime (13028363) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6514184 + 6514185.
It is an arithmetic number, because the mean of its divisors is an integer number (6514185).
Almost surely, 213028369 is an apocalyptic number.
It is an amenable number.
13028369 is a deficient number, since it is larger than the sum of its proper divisors (1).
13028369 is an equidigital number, since it uses as much as digits as its factorization.
13028369 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 7776, while the sum is 32.
The square root of 13028369 is about 3609.4832040058. The cubic root of 13028369 is about 235.3043830043.
The spelling of 13028369 in words is "thirteen million, twenty-eight thousand, three hundred sixty-nine".
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