Base | Representation |
---|---|
bin | 101000100101010101… |
… | …0001010101110100000 |
3 | 22022221202200221110112 |
4 | 1101022222022232200 |
5 | 2411441342221023 |
6 | 104011555550452 |
7 | 6203464021334 |
oct | 1211252125640 |
9 | 268852627415 |
10 | 87151913888 |
11 | 33a62a8a916 |
12 | 14a82bbb428 |
13 | 82aba59b20 |
14 | 430a95b7c4 |
15 | 24012e4478 |
hex | 144aa8aba0 |
87151913888 has 24 divisors (see below), whose sum is σ = 184778818308. Its totient is φ = 40223960064.
The previous prime is 87151913867. The next prime is 87151913911. The reversal of 87151913888 is 88831915178.
It can be written as a sum of positive squares in 2 ways, for example, as 84348423184 + 2803490704 = 290428^2 + 52948^2 .
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104749481 + ... + 104750312.
Almost surely, 287151913888 is an apocalyptic number.
It is an amenable number.
87151913888 is an abundant number, since it is smaller than the sum of its proper divisors (97626904420).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
87151913888 is a wasteful number, since it uses less digits than its factorization.
87151913888 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 209499816 (or 209499808 counting only the distinct ones).
The product of its digits is 3870720, while the sum is 59.
The spelling of 87151913888 in words is "eighty-seven billion, one hundred fifty-one million, nine hundred thirteen thousand, eight hundred eighty-eight".
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