Base | Representation |
---|---|
bin | 101000111100001011… |
… | …1100011011100011010 |
3 | 22101221012201002200120 |
4 | 1101320113203130122 |
5 | 2420024202130310 |
6 | 104220032414110 |
7 | 6231465232134 |
oct | 1217027433432 |
9 | 271835632616 |
10 | 87918786330 |
11 | 343169544a1 |
12 | 150579a7336 |
13 | 83a18b12bb |
14 | 4380742054 |
15 | 24487c5b70 |
hex | 14785e371a |
87918786330 has 32 divisors (see below), whose sum is σ = 212940921600. Its totient is φ = 23229916992.
The previous prime is 87918786271. The next prime is 87918786337. The reversal of 87918786330 is 3368781978.
It is not an unprimeable number, because it can be changed into a prime (87918786337) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13439970 + ... + 13446509.
It is an arithmetic number, because the mean of its divisors is an integer number (6654403800).
Almost surely, 287918786330 is an apocalyptic number.
87918786330 is an abundant number, since it is smaller than the sum of its proper divisors (125022135270).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
87918786330 is a wasteful number, since it uses less digits than its factorization.
87918786330 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 26886598.
The product of its (nonzero) digits is 12192768, while the sum is 60.
The spelling of 87918786330 in words is "eighty-seven billion, nine hundred eighteen million, seven hundred eighty-six thousand, three hundred thirty".
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