Base | Representation |
---|---|
bin | 111011101111101110… |
… | …0110010010110111000 |
3 | 110021011122120111110200 |
4 | 1313133130302112320 |
5 | 4100231021321143 |
6 | 134535212442200 |
7 | 12161315541435 |
oct | 1673734622670 |
9 | 407148514420 |
10 | 128302917048 |
11 | 4a45a719639 |
12 | 20a48479360 |
13 | c139409c37 |
14 | 62d1d42b8c |
15 | 350dd891d3 |
hex | 1ddf7325b8 |
128302917048 has 48 divisors (see below), whose sum is σ = 347835794280. Its totient is φ = 42724718784.
The previous prime is 128302917007. The next prime is 128302917079. The reversal of 128302917048 is 840719203821.
It is a happy number.
It is a junction number, because it is equal to n+sod(n) for n = 128302916994 and 128302917012.
It is a congruent number.
It is an unprimeable number.
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 11 ways as a sum of consecutive naturals, for example, 821890 + ... + 965457.
Almost surely, 2128302917048 is an apocalyptic number.
128302917048 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is an amenable number.
128302917048 is an abundant number, since it is smaller than the sum of its proper divisors (219532877232).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
128302917048 is a wasteful number, since it uses less digits than its factorization.
128302917048 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1788356 (or 1788349 counting only the distinct ones).
The product of its (nonzero) digits is 193536, while the sum is 45.
The spelling of 128302917048 in words is "one hundred twenty-eight billion, three hundred two million, nine hundred seventeen thousand, forty-eight".
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