Base | Representation |
---|---|
bin | 1010011011011… |
… | …11011100110001 |
3 | 20002121212101121 |
4 | 11031233130301 |
5 | 134344111210 |
6 | 12403102241 |
7 | 2111431642 |
oct | 515573461 |
9 | 202555347 |
10 | 87488305 |
11 | 45426293 |
12 | 25371981 |
13 | 15182938 |
14 | b8956c9 |
15 | 7a326da |
hex | 536f731 |
87488305 has 16 divisors (see below), whose sum is σ = 106563600. Its totient is φ = 68947200.
The previous prime is 87488279. The next prime is 87488311. The reversal of 87488305 is 50388478.
It is a happy number.
It can be written as a sum of positive squares in 8 ways, for example, as 19607184 + 67881121 = 4428^2 + 8239^2 .
It is not a de Polignac number, because 87488305 - 217 = 87357233 is a prime.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124455 + ... + 125155.
It is an arithmetic number, because the mean of its divisors is an integer number (6660225).
Almost surely, 287488305 is an apocalyptic number.
It is an amenable number.
87488305 is a deficient number, since it is larger than the sum of its proper divisors (19075295).
87488305 is a wasteful number, since it uses less digits than its factorization.
87488305 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1044.
The product of its (nonzero) digits is 215040, while the sum is 43.
The square root of 87488305 is about 9353.5183220006. The cubic root of 87488305 is about 443.9322208714.
The spelling of 87488305 in words is "eighty-seven million, four hundred eighty-eight thousand, three hundred five".
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