Base | Representation |
---|---|
bin | 111010011101100… |
… | …011100010101001 |
3 | 2112100121010201022 |
4 | 322131203202221 |
5 | 4002042420111 |
6 | 241154302225 |
7 | 33206612561 |
oct | 7235434251 |
9 | 2470533638 |
10 | 980826281 |
11 | 463718336 |
12 | 234587975 |
13 | 128285ba6 |
14 | 94399da1 |
15 | 5b1952db |
hex | 3a7638a9 |
980826281 has 2 divisors, whose sum is σ = 980826282. Its totient is φ = 980826280.
The previous prime is 980826263. The next prime is 980826293. The reversal of 980826281 is 182628089.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 637057600 + 343768681 = 25240^2 + 18541^2 .
It is a cyclic number.
It is not a de Polignac number, because 980826281 - 210 = 980825257 is a prime.
It is a super-2 number, since 2×9808262812 = 1924040387000581922, which contains 22 as substring.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (980826241) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490413140 + 490413141.
It is an arithmetic number, because the mean of its divisors is an integer number (490413141).
Almost surely, 2980826281 is an apocalyptic number.
It is an amenable number.
980826281 is a deficient number, since it is larger than the sum of its proper divisors (1).
980826281 is an equidigital number, since it uses as much as digits as its factorization.
980826281 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 110592, while the sum is 44.
The square root of 980826281 is about 31318.1461935409. The cubic root of 980826281 is about 993.5674716326.
The spelling of 980826281 in words is "nine hundred eighty million, eight hundred twenty-six thousand, two hundred eighty-one".
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