Base | Representation |
---|---|
bin | 10110100000000101… |
… | …01111000111010110 |
3 | 1011011220020110210020 |
4 | 23100002233013112 |
5 | 144220030002130 |
6 | 5314415010010 |
7 | 605234651550 |
oct | 132002570726 |
9 | 34156213706 |
10 | 12080312790 |
11 | 513a026887 |
12 | 2411809906 |
13 | 11a69a43a0 |
14 | 8285664d0 |
15 | 4aa836e10 |
hex | 2d00af1d6 |
12080312790 has 256 divisors, whose sum is σ = 37623398400. Its totient is φ = 2413651968.
The previous prime is 12080312789. The next prime is 12080312831. The reversal of 12080312790 is 9721308021.
It is a Curzon number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4194571 + ... + 4197449.
It is an arithmetic number, because the mean of its divisors is an integer number (146966400).
Almost surely, 212080312790 is an apocalyptic number.
12080312790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 12080312790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18811699200).
12080312790 is an abundant number, since it is smaller than the sum of its proper divisors (25543085610).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12080312790 is a wasteful number, since it uses less digits than its factorization.
12080312790 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2991.
The product of its (nonzero) digits is 6048, while the sum is 33.
The spelling of 12080312790 in words is "twelve billion, eighty million, three hundred twelve thousand, seven hundred ninety".
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