Base | Representation |
---|---|
bin | 11010001001101111… |
… | …011001101000101111 |
3 | 2200110222210202220112 |
4 | 122021233121220233 |
5 | 430002130130033 |
6 | 20522231010235 |
7 | 2012603036525 |
oct | 321157315057 |
9 | 80428722815 |
10 | 28080708143 |
11 | 109aa911714 |
12 | 553820997b |
13 | 2856868547 |
14 | 150559c315 |
15 | ae53a9c48 |
hex | 689bd9a2f |
28080708143 has 2 divisors, whose sum is σ = 28080708144. Its totient is φ = 28080708142.
The previous prime is 28080708127. The next prime is 28080708163. The reversal of 28080708143 is 34180708082.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 28080708143 - 24 = 28080708127 is a prime.
It is a Sophie Germain prime.
It is a self number, because there is not a number n which added to its sum of digits gives 28080708143.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (28080708163) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14040354071 + 14040354072.
It is an arithmetic number, because the mean of its divisors is an integer number (14040354072).
Almost surely, 228080708143 is an apocalyptic number.
28080708143 is a deficient number, since it is larger than the sum of its proper divisors (1).
28080708143 is an equidigital number, since it uses as much as digits as its factorization.
28080708143 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 86016, while the sum is 41.
The spelling of 28080708143 in words is "twenty-eight billion, eighty million, seven hundred eight thousand, one hundred forty-three".
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