20021881 is an odd 8-digits composite number following 20021880
and preceding 20021882 . In scientific notation, it is written as 2.0021881 × 10^7.
The sum of its digits is 22. It has a total of 2 prime factors and 4 positive divisors.
There are 18201700 positive integers (up to 20021881) that are relatively prime to 20021881.
20021881 has 4 divisors, whose sum is 21842064
The reverse of 20021881 is 18812002
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 22
Digital Root 4
Name
twenty million twenty-one thousand eight hundred eighty-one
Scientific notation
2.0021881 × 10^7
Engineering notation
2.0021881 × 10^6
Prime Factorization
11 × 1820171
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20021881
Product of the distinct prime numbers
The prime factorization of 20021881 is 11 × 1820171.
Since it has a total of 2 prime factors.
4 , 6 , 73 , 3 , 878 , 584 , 1721 , 7856 , 41657 , 20989 , 823454 , 421847 , 9891057 , 4908683 , 78618250 , 6064582 , 530859431 , 59696887 , 7210597428 , 7562684646
n×2
40043762
n×3
60065643
n×4
80087524
n×5
100109405
n÷2
10010940.5
n÷3
6673960.3333333
n÷3
5005470.25
n÷5
4004376.2
n2
400875718778161
n3
8.0262859371658E+21
n4
1.6070134190591E+29
n5
3.2175431441804E+36
2 √n
4474.5816564233
3 √n
271.54071586776
4 √n
66.892313881516
5 √n
28.860308900352
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20021880
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20021881 can be divided by 4 positive divisors.
The sum of these divisors (counting 20021881) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100011000001001111001
3
Ternary
1101200012212011
4
Quaternary
1030120021321
5
Quinary
20111200011
6
Senary
1553045521
8
Octal
114301171
10
Decimal
20021881
12
Duodecimal
68568a1
16
Hexadecimal
1318279
20
Vigesimal
652ee1
36
Base36
bx4zd
md5
a08d0e60d8ede043b0db98d205140015
sha1
c90e887032a80d34808496aab5e5f6944bf453bb
sha256
1be4d35e9b484f8ba5e39d77bc97dd71f52e42827d64f6f14bfee70c2afe15da
sha512
f7a5ea3aa5b1aef016dee9beb6f3b0e47224d510f0e7af62bc5a1c64cfae380789d62e712c697e03748303ebfdd281bdd634b3e680aa8d1808e6f1901d50482c
ripemd-160
e54ef3751b2158895ae4295522d8ac24df8c53bd
Diameter
40043762
Circumference
125801188.5213
Area
1.259388213116E+15
Volume
3.3620427914415E+22
Surface area
5.037552852464E+15
Circumference
125801188.5213
Perimeter
80087524
Area
400875718778161
Diagonal
28315215.65442
Surface area
2405254312668966
Volume
8.0262859371658E+21
Space diagonal
34678915.155098
Perimeter
60065643
Area
1.7358427811112E+14
Altitude
17339457.577549
Surface area
1.7358427811112E+14
Volume
9.4590686898536E+20
Height
9438405.2181401