Base | Representation |
---|---|
bin | 11010001001100111… |
… | …010000111000100111 |
3 | 2200110211210101222112 |
4 | 122021213100320213 |
5 | 430001103401033 |
6 | 20522113151235 |
7 | 2012545644053 |
oct | 321147207047 |
9 | 80424711875 |
10 | 28078575143 |
11 | 109a9695103 |
12 | 553755b51b |
13 | 285629c708 |
14 | 15051a4c63 |
15 | ae50d7c48 |
hex | 6899d0e27 |
28078575143 has 2 divisors, whose sum is σ = 28078575144. Its totient is φ = 28078575142.
The previous prime is 28078575131. The next prime is 28078575167. The reversal of 28078575143 is 34157587082.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 28078575143 - 210 = 28078574119 is a prime.
It is a super-2 number, since 2×280785751432 (a number of 22 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 28078575091 and 28078575100.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (28078575643) 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, 14039287571 + 14039287572.
It is an arithmetic number, because the mean of its divisors is an integer number (14039287572).
Almost surely, 228078575143 is an apocalyptic number.
28078575143 is a deficient number, since it is larger than the sum of its proper divisors (1).
28078575143 is an equidigital number, since it uses as much as digits as its factorization.
28078575143 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 1881600, while the sum is 50.
The spelling of 28078575143 in words is "twenty-eight billion, seventy-eight million, five hundred seventy-five thousand, one hundred forty-three".
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