Base | Representation |
---|---|
bin | 111011101111010001… |
… | …1011011111111111111 |
3 | 110021010121021200222211 |
4 | 1313132203123333333 |
5 | 4100213144231023 |
6 | 134533514321251 |
7 | 12161044005241 |
oct | 1673643337777 |
9 | 407117250884 |
10 | 128287883263 |
11 | 4a452190521 |
12 | 20a43429227 |
13 | c1362750c7 |
14 | 62cdd4c091 |
15 | 350c8b9a0d |
hex | 1dde8dbfff |
128287883263 has 8 divisors (see below), whose sum is σ = 128499900480. Its totient is φ = 128076026880.
The previous prime is 128287883237. The next prime is 128287883279. The reversal of 128287883263 is 362388782821.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-128287883263 is a prime.
It is a super-2 number, since 2×1282878832632 (a number of 23 digits) contains 22 as substring.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 128287883198 and 128287883207.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (128287887263) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (29) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1611978 + ... + 1689688.
It is an arithmetic number, because the mean of its divisors is an integer number (16062487560).
Almost surely, 2128287883263 is an apocalyptic number.
128287883263 is a deficient number, since it is larger than the sum of its proper divisors (212017217).
128287883263 is an equidigital number, since it uses as much as digits as its factorization.
128287883263 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 80417.
The product of its digits is 12386304, while the sum is 58.
The spelling of 128287883263 in words is "one hundred twenty-eight billion, two hundred eighty-seven million, eight hundred eighty-three thousand, two hundred sixty-three".
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