Base | Representation |
---|---|
bin | 1111001001010001… |
… | …00101100001101000 |
3 | 202222122120001020111 |
4 | 13210220211201220 |
5 | 113122441441013 |
6 | 3422451304104 |
7 | 405326522164 |
oct | 74450454150 |
9 | 22878501214 |
10 | 8130812008 |
11 | 34a26a4450 |
12 | 16aabab034 |
13 | 9c7684387 |
14 | 571bd9ca4 |
15 | 328c3973d |
hex | 1e4a25868 |
8130812008 has 32 divisors (see below), whose sum is σ = 17036853120. Its totient is φ = 3605680000.
The previous prime is 8130811963. The next prime is 8130812017. The reversal of 8130812008 is 8002180318.
It is a super-2 number, since 2×81308120082 (a number of 21 digits) contains 22 as substring.
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, 1123168 + ... + 1130383.
It is an arithmetic number, because the mean of its divisors is an integer number (532401660).
Almost surely, 28130812008 is an apocalyptic number.
8130812008 is a gapful number since it is divisible by the number (88) formed by its first and last digit.
It is an amenable number.
8130812008 is an abundant number, since it is smaller than the sum of its proper divisors (8906041112).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
8130812008 is a wasteful number, since it uses less digits than its factorization.
8130812008 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2253609 (or 2253605 counting only the distinct ones).
The product of its (nonzero) digits is 3072, while the sum is 31.
The square root of 8130812008 is about 90171.0153430691. The cubic root of 8130812008 is about 2010.8421186889.
The spelling of 8130812008 in words is "eight billion, one hundred thirty million, eight hundred twelve thousand, eight".
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