Base | Representation |
---|---|
bin | 1000010110101010110… |
… | …10011001110101000001 |
3 | 1000102220220001000020220 |
4 | 10023111122121311001 |
5 | 14200333331410311 |
6 | 335511305253253 |
7 | 26511216243411 |
oct | 4132532316501 |
9 | 1012826030226 |
10 | 287048310081 |
11 | 100811318a35 |
12 | 4776ba94229 |
13 | 210b7773070 |
14 | dc70d90641 |
15 | 7700601206 |
hex | 42d5699d41 |
287048310081 has 64 divisors (see below), whose sum is σ = 428736672000. Its totient is φ = 169616240640.
The previous prime is 287048310011. The next prime is 287048310089. The reversal of 287048310081 is 180013840782.
It is not a de Polignac number, because 287048310081 - 219 = 287047785793 is a prime.
It is a super-2 number, since 2×2870483100812 (a number of 24 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (287048310089) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 193819861 + ... + 193821341.
It is an arithmetic number, because the mean of its divisors is an integer number (6699010500).
Almost surely, 2287048310081 is an apocalyptic number.
It is an amenable number.
287048310081 is a deficient number, since it is larger than the sum of its proper divisors (141688361919).
287048310081 is a wasteful number, since it uses less digits than its factorization.
287048310081 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2354.
The product of its (nonzero) digits is 86016, while the sum is 42.
The spelling of 287048310081 in words is "two hundred eighty-seven billion, forty-eight million, three hundred ten thousand, eighty-one".
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