Base | Representation |
---|---|
bin | 101000100100000010… |
… | …1001010101110100010 |
3 | 22022211202022102110111 |
4 | 1101020011022232202 |
5 | 2411344304111010 |
6 | 104003412521534 |
7 | 6202430252152 |
oct | 1211005125642 |
9 | 268752272414 |
10 | 87108660130 |
11 | 33a40627708 |
12 | 14a706202aa |
13 | 82a2ac429b |
14 | 4304cdc762 |
15 | 23ec5ed58a |
hex | 144814aba2 |
87108660130 has 16 divisors (see below), whose sum is σ = 156800832120. Its totient is φ = 34842298752.
The previous prime is 87108660113. The next prime is 87108660131. The reversal of 87108660130 is 3106680178.
It can be written as a sum of positive squares in 4 ways, for example, as 86681369889 + 427290241 = 294417^2 + 20671^2 .
It is not an unprimeable number, because it can be changed into a prime (87108660131) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209542 + ... + 467038.
Almost surely, 287108660130 is an apocalyptic number.
87108660130 is a deficient number, since it is larger than the sum of its proper divisors (69692171990).
87108660130 is a wasteful number, since it uses less digits than its factorization.
87108660130 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 291333.
The product of its (nonzero) digits is 48384, while the sum is 40.
The spelling of 87108660130 in words is "eighty-seven billion, one hundred eight million, six hundred sixty thousand, one hundred thirty".
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