Base | Representation |
---|---|
bin | 111011101001010110… |
… | …0011111101000110111 |
3 | 110020121201220212121201 |
4 | 1313102230133220313 |
5 | 4044311231241441 |
6 | 134502050153331 |
7 | 12153106643146 |
oct | 1672254375067 |
9 | 406551825551 |
10 | 128088930871 |
11 | 4a35a953660 |
12 | 209a8882847 |
13 | c103c968b5 |
14 | 62b175d75d |
15 | 34ea1bac31 |
hex | 1dd2b1fa37 |
128088930871 has 8 divisors (see below), whose sum is σ = 139736306304. Its totient is φ = 116442043320.
The previous prime is 128088930839. The next prime is 128088930877. The reversal of 128088930871 is 178039880821.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 128088930871 - 25 = 128088930839 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (128088930877) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 626950 + ... + 805756.
It is an arithmetic number, because the mean of its divisors is an integer number (17467038288).
Almost surely, 2128088930871 is an apocalyptic number.
128088930871 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
128088930871 is a deficient number, since it is larger than the sum of its proper divisors (11647375433).
128088930871 is a wasteful number, since it uses less digits than its factorization.
128088930871 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 243941.
The product of its (nonzero) digits is 1548288, while the sum is 55.
The spelling of 128088930871 in words is "one hundred twenty-eight billion, eighty-eight million, nine hundred thirty thousand, eight hundred seventy-one".
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