Base | Representation |
---|---|
bin | 10111111111011100… |
… | …00001101010100000 |
3 | 1020020122100110012020 |
4 | 23333232001222200 |
5 | 202334312040422 |
6 | 5530031101440 |
7 | 634116544446 |
oct | 137756015240 |
9 | 36218313166 |
10 | 12880190112 |
11 | 550a593519 |
12 | 25b5671880 |
13 | 12a361348a |
14 | 8a289cb96 |
15 | 505b8795c |
hex | 2ffb81aa0 |
12880190112 has 24 divisors (see below), whose sum is σ = 33810499296. Its totient is φ = 4293396672.
The previous prime is 12880190111. The next prime is 12880190119. The reversal of 12880190112 is 21109108821.
It is a tau number, because it is divible by the number of its divisors (24).
It is not an unprimeable number, because it can be changed into a prime (12880190111) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67084228 + ... + 67084419.
It is an arithmetic number, because the mean of its divisors is an integer number (1408770804).
Almost surely, 212880190112 is an apocalyptic number.
12880190112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
12880190112 is an abundant number, since it is smaller than the sum of its proper divisors (20930309184).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12880190112 is a wasteful number, since it uses less digits than its factorization.
12880190112 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 134168660 (or 134168652 counting only the distinct ones).
The product of its (nonzero) digits is 2304, while the sum is 33.
Adding to 12880190112 its reverse (21109108821), we get a palindrome (33989298933).
The spelling of 12880190112 in words is "twelve billion, eight hundred eighty million, one hundred ninety thousand, one hundred twelve".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.064 sec. • engine limits •