Base | Representation |
---|---|
bin | 101000101001010111… |
… | …0010011000011100101 |
3 | 22100022012021220202020 |
4 | 1101102232103003211 |
5 | 2412231011324214 |
6 | 104033231533353 |
7 | 6210026036241 |
oct | 1212256230345 |
9 | 270265256666 |
10 | 87287214309 |
11 | 340223a2049 |
12 | 14b0038a259 |
13 | 8300ab0049 |
14 | 43208db421 |
15 | 240d11d4a9 |
hex | 1452b930e5 |
87287214309 has 32 divisors (see below), whose sum is σ = 122923008000. Its totient is φ = 54942482880.
The previous prime is 87287214299. The next prime is 87287214319. The reversal of 87287214309 is 90341278278.
It is an interprime number because it is at equal distance from previous prime (87287214299) and next prime (87287214319).
It is not a de Polignac number, because 87287214309 - 24 = 87287214293 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87287214319) 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 in 31 ways as a sum of consecutive naturals, for example, 44784667 + ... + 44786615.
It is an arithmetic number, because the mean of its divisors is an integer number (3841344000).
Almost surely, 287287214309 is an apocalyptic number.
It is an amenable number.
87287214309 is a deficient number, since it is larger than the sum of its proper divisors (35635793691).
87287214309 is a wasteful number, since it uses less digits than its factorization.
87287214309 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4225.
The product of its (nonzero) digits is 1354752, while the sum is 51.
The spelling of 87287214309 in words is "eighty-seven billion, two hundred eighty-seven million, two hundred fourteen thousand, three hundred nine".
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