27991909 is an odd 8-digits composite number following 27991908
and preceding 27991910 . In scientific notation, it is written as 2.7991909 × 10^7.
The sum of its digits is 46. It has a total of 3 prime factors and 8 positive divisors.
There are 25339200 positive integers (up to 27991909) that are relatively prime to 27991909.
27991909 has 8 divisors, whose sum is 30666240
The reverse of 27991909 is 90919972
Previous prime number is 241
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 46
Digital Root 1
Name
twenty-seven million nine hundred ninety-one thousand nine hundred nine
Scientific notation
2.7991909 × 10^7
Engineering notation
2.7991909 × 10^6
Prime Factorization
11 × 241 × 10559
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
27991909
Product of the distinct prime numbers
The prime factorization of 27991909 is 11 × 241 × 10559.
Since it has a total of 3 prime factors.
3 , 9 , 4 , 31 , 249 , 248 , 9437 , 2563 , 41119 , 87148 , 881995 , 488486 , 6463072 , 2099215 , 46863838 , 87184873 , 889105182 , 142832290 , 1631084811 , 6143223541
n×2
55983818
n×3
83975727
n×4
111967636
n×5
139959545
n÷2
13995954.5
n÷3
9330636.3333333
n÷3
6997977.25
n÷5
5598381.8
n2
783546969464281
n3
2.193297546647E+22
n4
6.1394585335666E+29
n5
1.7185516458087E+37
2 √n
5290.7380392531
3 √n
303.62964551105
4 √n
72.737459670057
5 √n
30.860751928
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-27991908
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1
Returns the nth root of the product of n divisors
H
Harmonic Mean
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 27991909 can be divided by 8 positive divisors.
The sum of these divisors (counting 27991909) is 1, the average is 0.125.
Base
System
Value
2
Binary
1101010110001111101100101
3
Ternary
1221200010200101
4
Quaternary
1222301331211
5
Quinary
24131220114
6
Senary
2435544101
8
Octal
152617545
10
Decimal
27991909
12
Duodecimal
945b031
16
Hexadecimal
1ab1f65
20
Vigesimal
8eijf9
36
Base36
gnyp1
md5
23740dd500ebe4a097ab8a5f20c0ac81
sha1
0c63d70094665125d593278ea39e5f1380aebe82
sha256
09235186bfacb6cc029d6529eed595b8557990e464e4d0fb4fe55ab5e49f3b38
sha512
f9978c3913ca19c07491df6035c26a4657d715d281b77df55ebf2b1cfacf916211a5448d8eab56eef5af07a35407d3b0ee3d2e294eacb530185a93d2ead0d948
ripemd-160
45a98f3af0ba3b0e24a06dc14afda6ca50677ce3
Diameter
55983818
Circumference
175878351.34871
Area
2.4615854030115E+15
Volume
9.1872632795769E+22
Surface area
9.8463416120461E+15
Circumference
175878351.34871
Perimeter
111967636
Area
783546969464281
Diagonal
39586537.344514
Surface area
4701281816785686
Volume
2.193297546647E+22
Space diagonal
48483408.588845
Perimeter
83975727
Area
3.3928579030719E+14
Altitude
24241704.294422
Surface area
3.3928579030719E+14
Volume
2.5848259473232E+21
Height
13195512.448171