Base | Representation |
---|---|
bin | 1010011000111… |
… | …11001000110001 |
3 | 20002000011010220 |
4 | 11030133020301 |
5 | 134303044340 |
6 | 12352043253 |
7 | 2105561610 |
oct | 514371061 |
9 | 202004126 |
10 | 87159345 |
11 | 45221119 |
12 | 25233529 |
13 | 15098ca0 |
14 | b80b877 |
15 | 79b9ed0 |
hex | 531f231 |
87159345 has 32 divisors (see below), whose sum is σ = 171639552. Its totient is φ = 36778752.
The previous prime is 87159341. The next prime is 87159353. The reversal of 87159345 is 54395178.
It is not a de Polignac number, because 87159345 - 22 = 87159341 is a prime.
It is a Curzon number.
It is a junction number, because it is equal to n+sod(n) for n = 87159297 and 87159306.
It is not an unprimeable number, because it can be changed into a prime (87159341) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30562 + ... + 33291.
It is an arithmetic number, because the mean of its divisors is an integer number (5363736).
Almost surely, 287159345 is an apocalyptic number.
It is an amenable number.
87159345 is a deficient number, since it is larger than the sum of its proper divisors (84480207).
87159345 is a wasteful number, since it uses less digits than its factorization.
87159345 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 63881.
The product of its digits is 151200, while the sum is 42.
The square root of 87159345 is about 9335.9169340778. The cubic root of 87159345 is about 443.3751202752.
The spelling of 87159345 in words is "eighty-seven million, one hundred fifty-nine thousand, three hundred forty-five".
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