Base | Representation |
---|---|
bin | 1010010111110… |
… | …01111101011111 |
3 | 20001201102021010 |
4 | 11023321331133 |
5 | 134233211241 |
6 | 12344510303 |
7 | 2104355634 |
oct | 513717537 |
9 | 201642233 |
10 | 87007071 |
11 | 45127778 |
12 | 2517b393 |
13 | 15044898 |
14 | b7ac18b |
15 | 7989d16 |
hex | 52f9f5f |
87007071 has 16 divisors (see below), whose sum is σ = 124671744. Its totient is φ = 53775744.
The previous prime is 87007069. The next prime is 87007073. The reversal of 87007071 is 17070078.
It is an interprime number because it is at equal distance from previous prime (87007069) and next prime (87007073).
It is not a de Polignac number, because 87007071 - 21 = 87007069 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87007073) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9315 + ... + 16148.
It is an arithmetic number, because the mean of its divisors is an integer number (7791984).
Almost surely, 287007071 is an apocalyptic number.
87007071 is a deficient number, since it is larger than the sum of its proper divisors (37664673).
87007071 is a wasteful number, since it uses less digits than its factorization.
87007071 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 25550.
The product of its (nonzero) digits is 2744, while the sum is 30.
The square root of 87007071 is about 9327.7580907740. The cubic root of 87007071 is about 443.1167664180.
The spelling of 87007071 in words is "eighty-seven million, seven thousand, seventy-one".
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