161908 is an even 6-digits composite number following 161907
and preceding 161909 . In scientific notation, it is written as 1.61908 × 10^5.
The sum of its digits is 25. It has a total of 4 prime factors and 12 positive divisors.
There are 76160 positive integers (up to 161908) that are relatively prime to 161908.
161908 has 12 divisors, whose sum is 300132
The reverse of 161908 is 809161
Previous prime number is 17
Is Prime? no
Number parity even
Number length 6
Sum of Digits 25
Digital Root 7
Name
one hundred sixty-one thousand nine hundred eight
Scientific notation
1.61908 × 10^5
Engineering notation
1.61908 × 10^3
Prime Factorization
2 × 2 × 17 × 2381
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
80954
Product of the distinct prime numbers
The prime factorization of 161908 is 2 × 2 × 17 × 2381.
Since it has a total of 4 prime factors.
2 , 10 , 72 , 41 , 45 , 13 , 192 , 860 , 89784 , 31647 , 227380 , 160367 , 2326523 , 9840974 , 2341729 , 68882853 , 942897042 , 446520122 , 8390217498 , 6920006101
n×2
323816
n×3
485724
n×4
647632
n×5
809540
n÷2
80954
n÷3
53969.333333333
n÷3
40477
n÷5
32381.6
n2
26214200464
n3
4244288768725312
n4
6.8718430596678E+20
n5
1.1126063661047E+26
2 √n
402.37793180044
3 √n
54.503296380591
4 √n
20.059360204165
5 √n
11.011682011642
1 , 2 , 4 , 17 , 34 , 68 , 2381 , 4762 , 9524 , 40477 , 80954 , 161908
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-161907
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 161908 can be divided by 12 positive divisors.
The sum of these divisors (counting 161908) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
100111100001110100
3
Ternary
22020002121
4
Quaternary
213201310
5
Quinary
20140113
6
Senary
3245324
8
Octal
474164
10
Decimal
161908
12
Duodecimal
79844
16
Hexadecimal
27874
20
Vigesimal
104f8
36
Base36
3gxg
md5
35c5137b9ec26f8256134d0da7f69ec1
sha1
96db157f1f5166df0a610a14c41f9677234f6917
sha256
74bee2a4f1532a068d42514562301cb64077a1c1a2bb9a280561b35106588d98
sha512
d8671d0b20f8116244b2488102409abd367f93cb5b080b1486dc428755679156726c83a24b89227ea725dcd767e69e8426cb9ce10d49761b1766a8294f413865
ripemd-160
28ce6de88cc0238ffb1b18ffdeebc09f0f5cee33
Diameter
323816
Circumference
1017297.9667148
Area
82354339597.433
Volume
1.7778435220721E+16
Surface area
329417358389.73
Circumference
1017297.9667148
Perimeter
647632
Area
26214200464
Diagonal
228972.4894567
Surface area
157285202784
Volume
4244288768725312
Space diagonal
280432.88215186
Perimeter
485724
Area
11351081770.861
Altitude
140216.44107593
Surface area
11351081770.861
Volume
5.0019422827993E+14
Height
76324.163152234