Base | Representation |
---|---|
bin | 111111100111001110… |
… | …011010010100110100 |
3 | 20112022012200210001221 |
4 | 333213032122110310 |
5 | 2104341234333210 |
6 | 51213420000124 |
7 | 4635426632434 |
oct | 774716322464 |
9 | 215265623057 |
10 | 68303824180 |
11 | 26a70801079 |
12 | 112a2990044 |
13 | 6596c09917 |
14 | 343d6482c4 |
15 | 1b9b7651da |
hex | fe739a534 |
68303824180 has 24 divisors (see below), whose sum is σ = 144053654472. Its totient is φ = 27204268032.
The previous prime is 68303824163. The next prime is 68303824181. The reversal of 68303824180 is 8142830386.
It can be written as a sum of positive squares in 4 ways, for example, as 6117429796 + 62186394384 = 78214^2 + 249372^2 .
It is a super-2 number, since 2×683038241802 (a number of 22 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68303824181) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7324077 + ... + 7333396.
It is an arithmetic number, because the mean of its divisors is an integer number (6002235603).
Almost surely, 268303824180 is an apocalyptic number.
It is an amenable number.
68303824180 is an abundant number, since it is smaller than the sum of its proper divisors (75749830292).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68303824180 is a wasteful number, since it uses less digits than its factorization.
68303824180 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 14657715 (or 14657713 counting only the distinct ones).
The product of its (nonzero) digits is 221184, while the sum is 43.
The spelling of 68303824180 in words is "sixty-eight billion, three hundred three million, eight hundred twenty-four thousand, one hundred eighty".
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