21508908 is an even 8-digits composite number following 21508907
and preceding 21508909 . In scientific notation, it is written as 2.1508908 × 10^7.
The sum of its digits is 33. It has a total of 4 prime factors and 12 positive divisors.
There are 7169632 positive integers (up to 21508908) that are relatively prime to 21508908.
21508908 has 12 divisors, whose sum is 50187480
The reverse of 21508908 is 80980512
Previous prime number is 3
Is Prime? no
Number parity even
Number length 8
Sum of Digits 33
Digital Root 6
Name
twenty-one million five hundred eight thousand nine hundred eight
Scientific notation
2.1508908 × 10^7
Engineering notation
2.1508908 × 10^6
Prime Factorization
2 × 2 × 3 × 1792409
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
10754454
Product of the distinct prime numbers
The prime factorization of 21508908 is 2 × 2 × 3 × 1792409.
Since it has a total of 4 prime factors.
10 , 2 , 84 , 73 , 877 , 465 , 5771 , 4136 , 34043 , 52431 , 117609 , 955275 , 5403832 , 2653356 , 48002478 , 14427455 , 957484703 , 258030790 , 711306362 , 511790284
n×2
43017816
n×3
64526724
n×4
86035632
n×5
107544540
n÷2
10754454
n÷3
7169636
n÷3
5377227
n÷5
4301781.6
n2
462633123352464
n3
9.9507332879408E+21
n4
2.1402940682286E+29
n5
4.6035388206474E+36
2 √n
4637.7697226145
3 √n
278.10328615566
4 √n
68.101172696324
5 √n
29.276804481428
1 , 2 , 3 , 4 , 6 , 12 , 1792409 , 3584818 , 5377227 , 7169636 , 10754454 , 21508908
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
-21508907
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 21508908 can be divided by 12 positive divisors.
The sum of these divisors (counting 21508908) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1010010000011001100101100
3
Ternary
1111110202200020
4
Quaternary
1102003030230
5
Quinary
21001241113
6
Senary
2045002140
8
Octal
122031454
10
Decimal
21508908
12
Duodecimal
7253350
16
Hexadecimal
148332c
20
Vigesimal
6e8c58
36
Base36
ct0do
md5
5d0e8608035629a5c3177c6f8f69be66
sha1
abc3a53fcbd7f11390d6ac270fc8f6d06b5bb137
sha256
e29327c8f0cbb220c9f76e59aa2450513e6c46eb77041137ab3d29f6186df3f4
sha512
15887e3bdd8a432c2daa6f98e9481a193b5fbeaa5aedd5114167f42d95ec64818b0f2a6c9f56550b96ffb259f938cf92cfe211c1d5944b6a195b2eb95396a2de
ripemd-160
2fb507d923eea2e55499b52173b0f70ea7a2ac74
Diameter
43017816
Circumference
135144454.71908
Area
1.4534048216314E+15
Volume
4.1681534126968E+22
Surface area
5.8136192865256E+15
Circumference
135144454.71908
Perimeter
86035632
Area
462633123352464
Diagonal
30418189.405435
Surface area
2775798740114784
Volume
9.9507332879408E+21
Space diagonal
37254521.471325
Perimeter
64526724
Area
2.0032601872769E+14
Altitude
18627260.735662
Surface area
2.0032601872769E+14
Volume
1.1727051642803E+21
Height
10139396.468478