Base | Representation |
---|---|
bin | 1000011000110111110… |
… | …00110010000000110101 |
3 | 1000112222021212112220211 |
4 | 10030123320302000311 |
5 | 14210244023203311 |
6 | 340224503425421 |
7 | 26552424226036 |
oct | 4143370620065 |
9 | 1015867775824 |
10 | 288230678581 |
11 | 10126878198a |
12 | 47a3ba55271 |
13 | 212457031b1 |
14 | dd44010a8d |
15 | 776e307821 |
hex | 431be32035 |
288230678581 has 2 divisors, whose sum is σ = 288230678582. Its totient is φ = 288230678580.
The previous prime is 288230678531. The next prime is 288230678597. The reversal of 288230678581 is 185876032882.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 217117789681 + 71112888900 = 465959^2 + 266670^2 .
It is a cyclic number.
It is not a de Polignac number, because 288230678581 - 217 = 288230547509 is a prime.
It is a super-2 number, since 2×2882306785812 (a number of 24 digits) contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (288230678531) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144115339290 + 144115339291.
It is an arithmetic number, because the mean of its divisors is an integer number (144115339291).
Almost surely, 2288230678581 is an apocalyptic number.
It is an amenable number.
288230678581 is a deficient number, since it is larger than the sum of its proper divisors (1).
288230678581 is an equidigital number, since it uses as much as digits as its factorization.
288230678581 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 10321920, while the sum is 58.
The spelling of 288230678581 in words is "two hundred eighty-eight billion, two hundred thirty million, six hundred seventy-eight thousand, five hundred eighty-one".
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