21052008 is an even 8-digits composite number following 21052007
and preceding 21052009 . In scientific notation, it is written as 2.1052008 × 10^7.
The sum of its digits is 18. It has a total of 6 prime factors and 32 positive divisors.
There are 7017264 positive integers (up to 21052008) that are relatively prime to 21052008.
21052008 has 32 divisors, whose sum is 58478400
The reverse of 21052008 is 80025012
Previous prime number is 3
Is Prime? no
Number parity even
Number length 8
Sum of Digits 18
Digital Root 9
Name
twenty-one million fifty-two thousand eight
Scientific notation
2.1052008 × 10^7
Engineering notation
2.1052008 × 10^6
Prime Factorization
2 × 2 × 2 × 9 × 3 × 97463
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
6
Total number of prime factors
rad
Radical
5263002
Product of the distinct prime numbers
The prime factorization of 21052008 is 2 × 2 × 2 × 9 × 3 × 97463.
Since it has a total of 6 prime factors.
8 , 9 , 75 , 70 , 230 , 492 , 1755 , 4652 , 4268 , 7654 , 528160 , 263240 , 9235421 , 433623 , 15904373 , 38512433 , 787878228 , 503433743 , 5563681456 , 4209504906
n×2
42104016
n×3
63156024
n×4
84208032
n×5
105260040
n÷2
10526004
n÷3
7017336
n÷3
5263002
n÷5
4210401.6
n2
443187040832064
n3
9.3299771290929E+21
n4
1.9641475316148E+29
n5
4.1349249548735E+36
2 √n
4588.2467239677
3 √n
276.1199856382
4 √n
67.736598113337
5 √n
29.151352250219
1 , 2 , 3 , 4 , 6 , 8 , 9 , 12 , 18 , 24 , 27 , 36 , 54 , 72 , 108 , 216 , 97463 , 194926 , 292389 , 389852 , 584778 , 779704 , 877167 , 1169556 , 1754334 , 2339112 , 2631501 , 3508668 , 5263002 , 7017336 , 10526004 , 21052008
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
-21052007
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 21052008 can be divided by 32 positive divisors.
The sum of these divisors (counting 21052008) is 1, the average is 0.03125.
Base
System
Value
2
Binary
1010000010011101001101000
3
Ternary
1110121112221000
4
Quaternary
1100103221220
5
Quinary
20342131013
6
Senary
2031115000
8
Octal
120235150
10
Decimal
21052008
12
Duodecimal
7072a60
16
Hexadecimal
1413a68
20
Vigesimal
6bba08
36
Base36
cj7u0
md5
dc0bae24d7c27c3b56a7011099a11b3b
sha1
f26b3a2deb3adc0879f98b393bc003aaedeb8c24
sha256
50b811390e2f22b7dffdd1315ab8e00d8f7da2517bfe173608e045715705c361
sha512
2292e9edd377d18d4c7e0086886d1a1103fc99fc09c827ba4e4a1d48bf1af89cdbc1f58f468940c3a829fd1eb1d283007cffc8cbff8e8df3ed21ceb04a520c6c
ripemd-160
31e3c1fb62f6821ba7febbf6dda4be99f3fc130b
Diameter
42104016
Circumference
132273667.35223
Area
1.3923131516442E+15
Volume
3.9081316809226E+22
Surface area
5.5692526065768E+15
Circumference
132273667.35223
Perimeter
84208032
Area
443187040832064
Diagonal
29772035.228787
Surface area
2659122244992384
Volume
9.3299771290929E+21
Space diagonal
36463147.457346
Perimeter
63156024
Area
1.9190561799431E+14
Altitude
18231573.728673
Surface area
1.9190561799431E+14
Volume
1.0995483493828E+21
Height
9924011.742929