Base | Representation |
---|---|
bin | 1010011001111… |
… | …01011001010111 |
3 | 20002020110011100 |
4 | 11030331121113 |
5 | 134321031122 |
6 | 12354441143 |
7 | 2106616140 |
oct | 514753127 |
9 | 202213140 |
10 | 87283287 |
11 | 452a6253 |
12 | 252931b3 |
13 | 15110520 |
14 | b840ac7 |
15 | 79e1aac |
hex | 533d657 |
87283287 has 48 divisors (see below), whose sum is σ = 164324160. Its totient is φ = 43324416.
The previous prime is 87283271. The next prime is 87283289. The reversal of 87283287 is 78238278.
It is not a de Polignac number, because 87283287 - 24 = 87283271 is a prime.
It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87283289) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10789 + ... + 17057.
It is an arithmetic number, because the mean of its divisors is an integer number (3423420).
Almost surely, 287283287 is an apocalyptic number.
87283287 is a deficient number, since it is larger than the sum of its proper divisors (77040873).
87283287 is a wasteful number, since it uses less digits than its factorization.
87283287 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6312 (or 6309 counting only the distinct ones).
The product of its digits is 301056, while the sum is 45.
The square root of 87283287 is about 9342.5524884798. The cubic root of 87283287 is about 443.5851829361.
The spelling of 87283287 in words is "eighty-seven million, two hundred eighty-three thousand, two hundred eighty-seven".
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