Base | Representation |
---|---|
bin | 11010001111001110000001 |
3 | 110221102221202 |
4 | 122033032001 |
5 | 3230044311 |
6 | 403230545 |
7 | 112314500 |
oct | 32171601 |
9 | 13842852 |
10 | 6878081 |
11 | 3978671 |
12 | 2378455 |
13 | 156a892 |
14 | cb0837 |
15 | 90ce3b |
hex | 68f381 |
6878081 has 24 divisors (see below), whose sum is σ = 8864640. Its totient is φ = 5292672.
The previous prime is 6878077. The next prime is 6878083. The reversal of 6878081 is 1808786.
It is not a de Polignac number, because 6878081 - 22 = 6878077 is a prime.
It is a super-2 number, since 2×68780812 = 94615996485122, which contains 22 as substring.
It is a Duffinian number.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (6878083) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18980 + ... + 19338.
It is an arithmetic number, because the mean of its divisors is an integer number (369360).
Almost surely, 26878081 is an apocalyptic number.
It is an amenable number.
6878081 is a deficient number, since it is larger than the sum of its proper divisors (1986559).
6878081 is a wasteful number, since it uses less digits than its factorization.
6878081 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 413 (or 406 counting only the distinct ones).
The product of its (nonzero) digits is 21504, while the sum is 38.
The square root of 6878081 is about 2622.6095782636. The cubic root of 6878081 is about 190.1760233936.
The spelling of 6878081 in words is "six million, eight hundred seventy-eight thousand, eighty-one".
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