Base | Representation |
---|---|
bin | 1010011011100… |
… | …10010100001011 |
3 | 20002122110111100 |
4 | 11031302110023 |
5 | 134400000133 |
6 | 12403232443 |
7 | 2111511111 |
oct | 515622413 |
9 | 202573440 |
10 | 87500043 |
11 | 45434094 |
12 | 25378723 |
13 | 15188097 |
14 | b899ab1 |
15 | 7a35e13 |
hex | 537250b |
87500043 has 12 divisors (see below), whose sum is σ = 126589320. Its totient is φ = 58240896.
The previous prime is 87500029. The next prime is 87500053. The reversal of 87500043 is 34000578.
It is not a de Polignac number, because 87500043 - 28 = 87499787 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87500053) 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 11 ways as a sum of consecutive naturals, for example, 1446 + ... + 13307.
It is an arithmetic number, because the mean of its divisors is an integer number (10549110).
Almost surely, 287500043 is an apocalyptic number.
87500043 is a deficient number, since it is larger than the sum of its proper divisors (39089277).
87500043 is a wasteful number, since it uses less digits than its factorization.
87500043 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 15418 (or 15415 counting only the distinct ones).
The product of its (nonzero) digits is 3360, while the sum is 27.
The square root of 87500043 is about 9354.1457653813. The cubic root of 87500043 is about 443.9520735949.
The spelling of 87500043 in words is "eighty-seven million, five hundred thousand, forty-three".
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