Base | Representation |
---|---|
bin | 111101010100011… |
… | …001100101010001 |
3 | 2122200210022110021 |
4 | 331110121211101 |
5 | 4101330222331 |
6 | 250025503441 |
7 | 34331203666 |
oct | 7524314521 |
9 | 2580708407 |
10 | 1028757841 |
11 | 488785aa1 |
12 | 248641b81 |
13 | 135198967 |
14 | 9a8b5a6d |
15 | 604b2211 |
hex | 3d519951 |
1028757841 has 2 divisors, whose sum is σ = 1028757842. Its totient is φ = 1028757840.
The previous prime is 1028757817. The next prime is 1028757883. The reversal of 1028757841 is 1487578201.
1028757841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 972192400 + 56565441 = 31180^2 + 7521^2 .
It is an emirp because it is prime and its reverse (1487578201) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 1028757841 - 25 = 1028757809 is a prime.
It is not a weakly prime, because it can be changed into another prime (1028757811) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514378920 + 514378921.
It is an arithmetic number, because the mean of its divisors is an integer number (514378921).
Almost surely, 21028757841 is an apocalyptic number.
It is an amenable number.
1028757841 is a deficient number, since it is larger than the sum of its proper divisors (1).
1028757841 is an equidigital number, since it uses as much as digits as its factorization.
1028757841 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 125440, while the sum is 43.
The square root of 1028757841 is about 32074.2551121612. The cubic root of 1028757841 is about 1009.4954971484.
The spelling of 1028757841 in words is "one billion, twenty-eight million, seven hundred fifty-seven thousand, eight hundred forty-one".
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