Base | Representation |
---|---|
bin | 10111111111101101… |
… | …00110111011001000 |
3 | 1020020210120202021222 |
4 | 23333312212323020 |
5 | 202340401034010 |
6 | 5530151221212 |
7 | 634144634522 |
oct | 137766467310 |
9 | 36223522258 |
10 | 12882439880 |
11 | 551088a832 |
12 | 25b6377808 |
13 | 12a3c204bb |
14 | 8a2cc6a12 |
15 | 505e7e355 |
hex | 2ffda6ec8 |
12882439880 has 32 divisors (see below), whose sum is σ = 28992843000. Its totient is φ = 5151668736.
The previous prime is 12882439853. The next prime is 12882439903. The reversal of 12882439880 is 8893428821.
It can be written as a sum of positive squares in 4 ways, for example, as 3670663396 + 9211776484 = 60586^2 + 95978^2 .
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127346 + ... + 204894.
Almost surely, 212882439880 is an apocalyptic number.
12882439880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
12882439880 is an abundant number, since it is smaller than the sum of its proper divisors (16110403120).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12882439880 is a wasteful number, since it uses less digits than its factorization.
12882439880 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 81713 (or 81709 counting only the distinct ones).
The product of its (nonzero) digits is 1769472, while the sum is 53.
The spelling of 12882439880 in words is "twelve billion, eight hundred eighty-two million, four hundred thirty-nine thousand, eight hundred eighty".
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