Base | Representation |
---|---|
bin | 11010100111110101… |
… | …111101001100100111 |
3 | 2201210012010012200112 |
4 | 122213311331030213 |
5 | 432020422240033 |
6 | 21044311403235 |
7 | 2031244544006 |
oct | 324765751447 |
9 | 81705105615 |
10 | 28585743143 |
11 | 111399a7a11 |
12 | 565938351b |
13 | 2907394319 |
14 | 15526a4c3d |
15 | b248b9c48 |
hex | 6a7d7d327 |
28585743143 has 8 divisors (see below), whose sum is σ = 30092025600. Its totient is φ = 27079637688.
The previous prime is 28585743103. The next prime is 28585743167. The reversal of 28585743143 is 34134758582.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 28585743143 - 214 = 28585726759 is a prime.
It is a super-2 number, since 2×285857431432 (a number of 22 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 28585743091 and 28585743100.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (28585743103) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403538 + ... + 469056.
It is an arithmetic number, because the mean of its divisors is an integer number (3761503200).
Almost surely, 228585743143 is an apocalyptic number.
28585743143 is a deficient number, since it is larger than the sum of its proper divisors (1506282457).
28585743143 is a wasteful number, since it uses less digits than its factorization.
28585743143 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 88501.
The product of its digits is 3225600, while the sum is 50.
The spelling of 28585743143 in words is "twenty-eight billion, five hundred eighty-five million, seven hundred forty-three thousand, one hundred forty-three".
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