Base | Representation |
---|---|
bin | 1111010010101… |
… | …10111011101110 |
3 | 22221101102022011 |
4 | 13221112323232 |
5 | 230320013400 |
6 | 20421311434 |
7 | 3115245010 |
oct | 751267356 |
9 | 287342264 |
10 | 128282350 |
11 | 66459479 |
12 | 36b6557a |
13 | 20766a21 |
14 | 130741b0 |
15 | b3de8ba |
hex | 7a56eee |
128282350 has 24 divisors (see below), whose sum is σ = 272692368. Its totient is φ = 43982400.
The previous prime is 128282347. The next prime is 128282351. The reversal of 128282350 is 53282821.
It is a super-3 number, since 3×1282823503 (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (128282351) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182911 + ... + 183610.
It is an arithmetic number, because the mean of its divisors is an integer number (11362182).
Almost surely, 2128282350 is an apocalyptic number.
128282350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
128282350 is an abundant number, since it is smaller than the sum of its proper divisors (144410018).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
128282350 is a wasteful number, since it uses less digits than its factorization.
128282350 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 366540 (or 366535 counting only the distinct ones).
The product of its (nonzero) digits is 7680, while the sum is 31.
The square root of 128282350 is about 11326.1798502408. The cubic root of 128282350 is about 504.3387089774.
The spelling of 128282350 in words is "one hundred twenty-eight million, two hundred eighty-two thousand, three hundred fifty".
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