21109215 is an odd 8-digits composite number following 21109214
and preceding 21109216 . In scientific notation, it is written as 2.1109215 × 10^7.
The sum of its digits is 21. It has a total of 2 prime factors and 4 positive divisors.
There are 11258240 positive integers (up to 21109215) that are relatively prime to 21109215.
21109215 has 4 divisors, whose sum is 22516512
The reverse of 21109215 is 51290112
Previous prime number is 15
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 21
Digital Root 3
Name
twenty-one million one hundred nine thousand two hundred fifteen
Scientific notation
2.1109215 × 10^7
Engineering notation
2.1109215 × 10^6
Prime Factorization
15 × 1407281
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21109215
Product of the distinct prime numbers
The prime factorization of 21109215 is 15 × 1407281.
Since it has a total of 2 prime factors.
9 , 9 , 70 , 37 , 311 , 354 , 6832 , 9447 , 39999 , 33089 , 622700 , 798889 , 6324167 , 7089333 , 6577769 , 99136690 , 730370532 , 120791031 , 5220201964 , 5699127868
n×2
42218430
n×3
63327645
n×4
84436860
n×5
105546075
n÷2
10554607.5
n÷3
7036405
n÷3
5277303.75
n÷5
4221843
n2
445598957916225
n3
9.4062442064295E+21
n4
1.9855843129603E+29
n5
4.1914126162905E+36
2 √n
4594.4765751933
3 √n
276.36987010683
4 √n
67.782568372652
5 √n
29.167178309835
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
-21109214
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 21109215 can be divided by 4 positive divisors.
The sum of these divisors (counting 21109215) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000100001100111011111
3
Ternary
1110201110101210
4
Quaternary
1100201213133
5
Quinary
20400443330
6
Senary
2032235503
8
Octal
120414737
10
Decimal
21109215
12
Duodecimal
709bb93
16
Hexadecimal
14219df
20
Vigesimal
6bid0f
36
Base36
ckfz3
md5
3c22532d7ab6b9271bad8e53655275dc
sha1
e777791cfe77930ad17c1de182ef37e0d49615cc
sha256
12ffd70363207517fcbb27067df9510642543c67df7b7d71ef35deee808e3887
sha512
60965e40e7b01be91ac4b55f419e36094b9b1c7409494e3b45a2cb882601ce2c6cb9d9ee9916440cedb8a4c077b984d860d480bd23e69789552c94756039a021
ripemd-160
62f4b9b99adc5bd645d60f76d5e866ef3243fbbf
Diameter
42218430
Circumference
132633109.53409
Area
1.3998904126369E+15
Volume
3.9400783595721E+22
Surface area
5.5995616505475E+15
Circumference
132633109.53409
Perimeter
84436860
Area
445598957916225
Diagonal
29852938.14405
Surface area
2673593747497350
Volume
9.4062442064295E+21
Space diagonal
36562232.887895
Perimeter
63327645
Area
1.9295000872766E+14
Altitude
18281116.443948
Surface area
1.9295000872766E+14
Volume
1.1085365106438E+21
Height
9950979.3813499