Base | Representation |
---|---|
bin | 1010011001111… |
… | …01010011100100 |
3 | 20002020102122121 |
4 | 11030331103210 |
5 | 134321023131 |
6 | 12354435324 |
7 | 2106615100 |
oct | 514752344 |
9 | 202212577 |
10 | 87282916 |
11 | 452a5a46 |
12 | 25292b44 |
13 | 151102c6 |
14 | b840900 |
15 | 79e1911 |
hex | 533d4e4 |
87282916 has 18 divisors (see below), whose sum is σ = 177683478. Its totient is φ = 37406880.
The previous prime is 87282911. The next prime is 87282917. The reversal of 87282916 is 61928278.
It can be written as a sum of positive squares in only one way, i.e., 80281600 + 7001316 = 8960^2 + 2646^2 .
It is not an unprimeable number, because it can be changed into a prime (87282911) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 222465 + ... + 222856.
Almost surely, 287282916 is an apocalyptic number.
It is an amenable number.
87282916 is an abundant number, since it is smaller than the sum of its proper divisors (90400562).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
87282916 is a wasteful number, since it uses less digits than its factorization.
87282916 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 445339 (or 445330 counting only the distinct ones).
The product of its digits is 96768, while the sum is 43.
The square root of 87282916 is about 9342.5326330712. The cubic root of 87282916 is about 443.5845544449.
The spelling of 87282916 in words is "eighty-seven million, two hundred eighty-two thousand, nine hundred sixteen".
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