21001880 is an even 8-digits composite number following 21001879
and preceding 21001881 . In scientific notation, it is written as 2.1001880 × 10^7.
The sum of its digits is 20. It has a total of 6 prime factors and 32 positive divisors.
There are 8129280 positive integers (up to 21001880) that are relatively prime to 21001880.
21001880 has 32 divisors, whose sum is 48781440
The reverse of 21001880 is 08810012
Previous prime number is 31
Is Prime? no
Number parity even
Number length 8
Sum of Digits 20
Digital Root 2
Name
twenty-one million one thousand eight hundred eighty
Scientific notation
2.1001880 × 10^7
Engineering notation
2.1001880 × 10^6
Prime Factorization
2 × 2 × 2 × 5 × 31 × 16937
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
6
Total number of prime factors
rad
Radical
5250470
Product of the distinct prime numbers
The prime factorization of 21001880 is 2 × 2 × 2 × 5 × 31 × 16937.
Since it has a total of 6 prime factors.
9 , 2 , 87 , 98 , 9 , 658 , 5885 , 1610 , 59250 , 22786 , 249812 , 436960 , 2671225 , 935040 , 14660032 , 66542901 , 942779699 , 471453996 , 9089630563 , 7303437098
n×2
42003760
n×3
63005640
n×4
84007520
n×5
105009400
n÷2
10500940
n÷3
7000626.6666667
n÷3
5250470
n÷5
4200376
n2
441078963534400
n3
9.2634874626738E+21
n4
1.9455065207258E+29
n5
4.0859294487501E+36
2 √n
4582.780815182
3 √n
275.90065037252
4 √n
67.696239298664
5 √n
29.137456256958
1 , 2 , 4 , 5 , 8 , 10 , 20 , 31 , 40 , 62 , 124 , 155 , 248 , 310 , 620 , 1240 , 16937 , 33874 , 67748 , 84685 , 135496 , 169370 , 338740 , 525047 , 677480 , 1050094 , 2100188 , 2625235 , 4200376 , 5250470 , 10500940 , 21001880
32 divisors
τ
Total Divisors
32
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21001879
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.03125
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
32
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21001880 can be divided by 32 positive divisors.
The sum of these divisors (counting 21001880) is 1, the average is 0.03125.
Base
System
Value
2
Binary
1010000000111011010011000
3
Ternary
1110112000011102
4
Quaternary
1100013122120
5
Quinary
20334030010
6
Senary
2030050532
8
Octal
120073230
10
Decimal
21001880
12
Duodecimal
7049a48
16
Hexadecimal
1407698
20
Vigesimal
6b54e0
36
Base36
ci55k
md5
fb1fe6e1b96c65c507fcc194e9b5a5d5
sha1
ceb7ce541ac4c636432d35fe5f7f3c045c291673
sha256
436f6273e4d7dc94b746eb4dd485e5610cba3087617e7c37177816435f7cf418
sha512
c99a05ae42185d47260a05ec1af91a3d75ed3cb21b4e2b89a092dac2ef03c12f7ddf60041206318e6a1f23e0e3053976085b693b58dd7e97890e1f42f137dfdc
ripemd-160
290f57e08dcefe6f44a17e733e7dd41af02bc195
Diameter
42003760
Circumference
131958703.83915
Area
1.3856904314927E+15
Volume
3.880280554581E+22
Surface area
5.5427617259707E+15
Circumference
131958703.83915
Perimeter
84007520
Area
441078963534400
Diagonal
29701143.531332
Surface area
2646473781206400
Volume
9.2634874626738E+21
Space diagonal
36376323.214465
Perimeter
63005640
Area
1.9099279374785E+14
Altitude
18188161.607232
Surface area
1.9099279374785E+14
Volume
1.0917124670489E+21
Height
9900381.1771108