Base | Representation |
---|---|
bin | 100110001001100… |
… | …0111100010001100 |
3 | 10022012200210122211 |
4 | 1030103013202030 |
5 | 10110200030022 |
6 | 331004320204 |
7 | 43502333461 |
oct | 11423074214 |
9 | 3265623584 |
10 | 1280080012 |
11 | 5a7632072 |
12 | 2b8843064 |
13 | 1752820c3 |
14 | c2017668 |
15 | 775a7e77 |
hex | 4c4c788c |
1280080012 has 6 divisors (see below), whose sum is σ = 2240140028. Its totient is φ = 640040004.
The previous prime is 1280080007. The next prime is 1280080049. The reversal of 1280080012 is 2100800821.
It is an unprimeable number.
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, 160009998 + ... + 160010005.
Almost surely, 21280080012 is an apocalyptic number.
It is an amenable number.
1280080012 is a deficient number, since it is larger than the sum of its proper divisors (960060016).
1280080012 is a wasteful number, since it uses less digits than its factorization.
1280080012 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 320020007 (or 320020005 counting only the distinct ones).
The product of its (nonzero) digits is 256, while the sum is 22.
The square root of 1280080012 is about 35778.2058242165. The cubic root of 1280080012 is about 1085.7896697064.
Adding to 1280080012 its reverse (2100800821), we get a palindrome (3380880833).
The spelling of 1280080012 in words is "one billion, two hundred eighty million, eighty thousand, twelve".
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