20105215 is an odd 8-digits composite number following 20105214
and preceding 20105216 . In scientific notation, it is written as 2.0105215 × 10^7.
The sum of its digits is 16. It has a total of 3 prime factors and 8 positive divisors.
There are 14846880 positive integers (up to 20105215) that are relatively prime to 20105215.
20105215 has 8 divisors, whose sum is 25982208
The reverse of 20105215 is 51250102
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 16
Digital Root 7
Name
twenty million one hundred five thousand two hundred fifteen
Scientific notation
2.0105215 × 10^7
Engineering notation
2.0105215 × 10^6
Prime Factorization
5 × 13 × 309311
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20105215
Product of the distinct prime numbers
The prime factorization of 20105215 is 5 × 13 × 309311.
Since it has a total of 3 prime factors.
4 , 4 , 83 , 100 , 287 , 14 , 5590 , 2842 , 11955 , 85641 , 704995 , 823966 , 7849075 , 4026270 , 74226908 , 28648181 , 466477502 , 907276626 , 5497180849 , 4306017549
n×2
40210430
n×3
60315645
n×4
80420860
n×5
100526075
n÷2
10052607.5
n÷3
6701738.3333333
n÷3
5026303.75
n÷5
4021043
n2
404219670196225
n3
8.1269233765242E+21
n4
1.6339354177354E+29
n5
3.2850622869686E+36
2 √n
4483.8839191041
3 √n
271.91692514149
4 √n
66.961809407334
5 √n
28.884293169287
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20105214
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20105215 can be divided by 8 positive divisors.
The sum of these divisors (counting 20105215) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001100101100011111111111
3
Ternary
1101211110011121
4
Quaternary
1030230133333
5
Quinary
20121331330
6
Senary
1554531411
8
Octal
114543777
10
Decimal
20105215
12
Duodecimal
6896b67
16
Hexadecimal
132c7ff
20
Vigesimal
65d30f
36
Base36
byxa7
md5
8a62fa05dcece07a31de678dd3ceeeee
sha1
493f3f6585a62113e2f94ce0d31e73cfdd2cc8a1
sha256
c3c92f09036a14614c29b6b46cb84efaa6374f8be70706227e565895b362c2cf
sha512
e009e9d0fee1744447b517d4d307a9005c69b5ceff63adb70bda1b3807f7610713feab887c86ccef7f4ff238d49945f426f5337e6ddedc35f6f94a1f6cef72c0
ripemd-160
fde23b039b26ca7d911ab2b7befbe50e563680fc
Diameter
40210430
Circumference
126324791.48569
Area
1.2698935463249E+15
Volume
3.4041977034634E+22
Surface area
5.0795741852998E+15
Circumference
126324791.48569
Perimeter
80420860
Area
404219670196225
Diagonal
28433067.727427
Surface area
2425318021177350
Volume
8.1269233765242E+21
Space diagonal
34823253.877096
Perimeter
60315645
Area
1.7503225154965E+14
Altitude
17411626.938548
Surface area
1.7503225154965E+14
Volume
9.5776710495396E+20
Height
9477689.2424757