Base | Representation |
---|---|
bin | 1111100001111… |
… | …11000011001110 |
3 | 100002010222212100 |
4 | 13300333003032 |
5 | 231323003203 |
6 | 20532215530 |
7 | 3141242652 |
oct | 760770316 |
9 | 302128770 |
10 | 130281678 |
11 | 675a460a |
12 | 3776a5a6 |
13 | 20cb6a67 |
14 | 13434a62 |
15 | b686ea3 |
hex | 7c3f0ce |
130281678 has 24 divisors (see below), whose sum is σ = 282677616. Its totient is φ = 43365600.
The previous prime is 130281677. The next prime is 130281691. The reversal of 130281678 is 876182031.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (130281677) 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, 8943 + ... + 18453.
It is an arithmetic number, because the mean of its divisors is an integer number (11778234).
Almost surely, 2130281678 is an apocalyptic number.
130281678 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
130281678 is an abundant number, since it is smaller than the sum of its proper divisors (152395938).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
130281678 is a wasteful number, since it uses less digits than its factorization.
130281678 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 10280 (or 10277 counting only the distinct ones).
The product of its (nonzero) digits is 16128, while the sum is 36.
The square root of 130281678 is about 11414.0999645176. The cubic root of 130281678 is about 506.9453158112.
It can be divided in two parts, 13028 and 1678, that added together give a triangular number (14706 = T171).
The spelling of 130281678 in words is "one hundred thirty million, two hundred eighty-one thousand, six hundred seventy-eight".
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