Base | Representation |
---|---|
bin | 101000101001001101… |
… | …1100110001101000101 |
3 | 22100021212001212001102 |
4 | 1101102123212031011 |
5 | 2412223232441010 |
6 | 104032534505445 |
7 | 6206636260640 |
oct | 1212233461505 |
9 | 270255055042 |
10 | 87282312005 |
11 | 3401a653959 |
12 | 14aba805285 |
13 | 82cca84885 |
14 | 431ddc2a57 |
15 | 240c9a0ba5 |
hex | 14526e6345 |
87282312005 has 32 divisors (see below), whose sum is σ = 126286387200. Its totient is φ = 56572506432.
The previous prime is 87282311993. The next prime is 87282312023. The reversal of 87282312005 is 50021328278.
It is a cyclic number.
It is not a de Polignac number, because 87282312005 - 28 = 87282311749 is a prime.
It is a Curzon number.
It is a self number, because there is not a number n which added to its sum of digits gives 87282312005.
It is a congruent number.
It is an unprimeable number.
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 in 31 ways as a sum of consecutive naturals, for example, 146456 + ... + 442734.
It is an arithmetic number, because the mean of its divisors is an integer number (3946449600).
Almost surely, 287282312005 is an apocalyptic number.
It is an amenable number.
87282312005 is a deficient number, since it is larger than the sum of its proper divisors (39004075195).
87282312005 is a wasteful number, since it uses less digits than its factorization.
87282312005 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 296753.
The product of its (nonzero) digits is 53760, while the sum is 38.
The spelling of 87282312005 in words is "eighty-seven billion, two hundred eighty-two million, three hundred twelve thousand, five".
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