Base | Representation |
---|---|
bin | 111011101001001010… |
… | …0000100111111110010 |
3 | 110020121021212200200011 |
4 | 1313102110010333302 |
5 | 4044303111432130 |
6 | 134501301045134 |
7 | 12153001354441 |
oct | 1672224047762 |
9 | 406537780604 |
10 | 128082530290 |
11 | 4a357281820 |
12 | 209a66b67aa |
13 | c102865480 |
14 | 62b0974d58 |
15 | 34e985452a |
hex | 1dd2504ff2 |
128082530290 has 64 divisors (see below), whose sum is σ = 271027451520. Its totient is φ = 42965245440.
The previous prime is 128082530281. The next prime is 128082530297. The reversal of 128082530290 is 92035280821.
It is not an unprimeable number, because it can be changed into a prime (128082530297) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2273037 + ... + 2328703.
It is an arithmetic number, because the mean of its divisors is an integer number (4234803930).
Almost surely, 2128082530290 is an apocalyptic number.
128082530290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
128082530290 is an abundant number, since it is smaller than the sum of its proper divisors (142944921230).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
128082530290 is a wasteful number, since it uses less digits than its factorization.
128082530290 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 57307.
The product of its (nonzero) digits is 69120, while the sum is 40.
The spelling of 128082530290 in words is "one hundred twenty-eight billion, eighty-two million, five hundred thirty thousand, two hundred ninety".
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