Base | Representation |
---|---|
bin | 1110111001110001… |
… | …01010010010010000 |
3 | 202122120221011101012 |
4 | 13130320222102100 |
5 | 112341201324310 |
6 | 3401525030052 |
7 | 402160514036 |
oct | 73470522220 |
9 | 22576834335 |
10 | 8000808080 |
11 | 343627a591 |
12 | 1673555328 |
13 | 9a6766b85 |
14 | 55c838556 |
15 | 31c609c05 |
hex | 1dce2a490 |
8000808080 has 40 divisors (see below), whose sum is σ = 18810905400. Its totient is φ = 3164361728.
The previous prime is 8000808061. The next prime is 8000808091. The reversal of 8000808080 is 808080008.
It can be written as a sum of positive squares in 4 ways, for example, as 1099850896 + 6900957184 = 33164^2 + 83072^2 .
It is a tau number, because it is divible by the number of its divisors (40).
8000808080 is a modest number, since divided by 808080 gives 8000 as remainder.
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, 554735 + ... + 568974.
It is an arithmetic number, because the mean of its divisors is an integer number (470272635).
Almost surely, 28000808080 is an apocalyptic number.
8000808080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.
It is an amenable number.
8000808080 is an abundant number, since it is smaller than the sum of its proper divisors (10810097320).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
8000808080 is a wasteful number, since it uses less digits than its factorization.
8000808080 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1123811 (or 1123805 counting only the distinct ones).
The product of its (nonzero) digits is 4096, while the sum is 32.
The square root of 8000808080 is about 89447.2362904523. The cubic root of 8000808080 is about 2000.0673377328.
Adding to 8000808080 its reverse (808080008), we get a palindrome (8808888088).
The spelling of 8000808080 in words is "eight billion, eight hundred eight thousand, eighty".
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