Base | Representation |
---|---|
bin | 1010011001111… |
… | …01101111001000 |
3 | 20002020112001221 |
4 | 11030331233020 |
5 | 134321102210 |
6 | 12354451424 |
7 | 2106623200 |
oct | 514755710 |
9 | 202215057 |
10 | 87284680 |
11 | 452a72aa |
12 | 25293b74 |
13 | 15111052 |
14 | b841400 |
15 | 79e21da |
hex | 533dbc8 |
87284680 has 48 divisors (see below), whose sum is σ = 228459420. Its totient is φ = 29925504.
The previous prime is 87284677. The next prime is 87284737. The reversal of 87284680 is 8648278.
It can be written as a sum of positive squares in 2 ways, for example, as 87198244 + 86436 = 9338^2 + 294^2 .
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20307 + ... + 24226.
Almost surely, 287284680 is an apocalyptic number.
It is an amenable number.
87284680 is an abundant number, since it is smaller than the sum of its proper divisors (141174740).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
87284680 is a wasteful number, since it uses less digits than its factorization.
87284680 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 44558 (or 44547 counting only the distinct ones).
The product of its (nonzero) digits is 172032, while the sum is 43.
The square root of 87284680 is about 9342.6270395430. The cubic root of 87284680 is about 443.5875427268.
The spelling of 87284680 in words is "eighty-seven million, two hundred eighty-four thousand, six hundred eighty".
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