Base | Representation |
---|---|
bin | 1100111100111010000011… |
… | …01101110100011110111101 |
3 | 10201211202111222220211022202 |
4 | 12132131001231310132331 |
5 | 12213113122322422034 |
6 | 140324001014521245 |
7 | 5666454330204302 |
oct | 636350155643675 |
9 | 121752458824282 |
10 | 28481030670269 |
11 | 9090812350561 |
12 | 323b993666225 |
13 | 12b79990362a8 |
14 | 7066bc68b0a9 |
15 | 345ccc40247e |
hex | 19e741b747bd |
28481030670269 has 2 divisors, whose sum is σ = 28481030670270. Its totient is φ = 28481030670268.
The previous prime is 28481030670227. The next prime is 28481030670299. The reversal of 28481030670269 is 96207603018482.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 22102804655044 + 6378226015225 = 4701362^2 + 2525515^2 .
It is a cyclic number.
It is not a de Polignac number, because 28481030670269 - 224 = 28481013893053 is a prime.
It is a super-2 number, since 2×284810306702692 (a number of 28 digits) contains 22 as substring.
It is a Sophie Germain prime.
It is a Curzon number.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (28481030670299) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14240515335134 + 14240515335135.
It is an arithmetic number, because the mean of its divisors is an integer number (14240515335135).
Almost surely, 228481030670269 is an apocalyptic number.
It is an amenable number.
28481030670269 is a deficient number, since it is larger than the sum of its proper divisors (1).
28481030670269 is an equidigital number, since it uses as much as digits as its factorization.
28481030670269 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 6967296, while the sum is 56.
The spelling of 28481030670269 in words is "twenty-eight trillion, four hundred eighty-one billion, thirty million, six hundred seventy thousand, two hundred sixty-nine".
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