20100918 is an even 8-digits composite number following 20100917
and preceding 20100919 . In scientific notation, it is written as 2.0100918 × 10^7.
The sum of its digits is 21. It has a total of 4 prime factors and 16 positive divisors.
There are 6615336 positive integers (up to 20100918) that are relatively prime to 20100918.
20100918 has 16 divisors, whose sum is 40711680
The reverse of 20100918 is 81900102
Previous prime number is 79
Is Prime? no
Number parity even
Number length 8
Sum of Digits 21
Digital Root 3
Name
twenty million one hundred thousand nine hundred eighteen
Scientific notation
2.0100918 × 10^7
Engineering notation
2.0100918 × 10^6
Prime Factorization
2 × 3 × 79 × 42407
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
20100918
Product of the distinct prime numbers
The prime factorization of 20100918 is 2 × 3 × 79 × 42407.
Since it has a total of 4 prime factors.
4 , 9 , 15 , 32 , 567 , 443 , 4431 , 8092 , 48211 , 61174 , 637793 , 371829 , 6590813 , 9468095 , 83784905 , 10722462 , 79837049 , 730343228 , 11422112 , 1423427362
n×2
40201836
n×3
60302754
n×4
80403672
n×5
100504590
n÷2
10050459
n÷3
6700306
n÷3
5025229.5
n÷5
4020183.6
n2
404046904442724
n3
8.121713694357E+21
n4
1.6325390098975E+29
n5
3.281553276975E+36
2 √n
4483.4047330126
3 √n
271.89755188803
4 √n
66.958231256602
5 √n
28.883058400897
1 , 2 , 3 , 6 , 79 , 158 , 237 , 474 , 42407 , 84814 , 127221 , 254442 , 3350153 , 6700306 , 10050459 , 20100918
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20100917
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20100918 can be divided by 16 positive divisors.
The sum of these divisors (counting 20100918) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001100101011011100110110
3
Ternary
1101211020021110
4
Quaternary
1030223130312
5
Quinary
20121212133
6
Senary
1554455450
8
Octal
114533466
10
Decimal
20100918
12
Duodecimal
6894586
16
Hexadecimal
132b736
20
Vigesimal
65cc5i
36
Base36
bytyu
md5
31c6f06ccf36b03d137c06fbd8bae8d3
sha1
2636bfb059a26404795897c91a7f907c0c980e1a
sha256
cade92704fc4dd97bfd91f239b440725a04fdb711bb6bd9104781c5b051f29a7
sha512
7be9172920015ec7adc9e1b1647ba9e6bf3859c9141e925482ef0dd44ff595d9956c12430d0cc2360c32f3f278e6c652dc819b3522826a7931e74647cf1e2ef1
ripemd-160
693851df0b324222c6f0dec0bfb5904f475ee051
Diameter
40201836
Circumference
126297792.63842
Area
1.269350786703E+15
Volume
3.4020154769002E+22
Surface area
5.0774031468118E+15
Circumference
126297792.63842
Perimeter
80403672
Area
404046904442724
Diagonal
28426990.851749
Surface area
2424281426656344
Volume
8.121713694357E+21
Space diagonal
34815811.254776
Perimeter
60302754
Area
1.7495744178393E+14
Altitude
17407905.627388
Surface area
1.7495744178393E+14
Volume
9.5715313802258E+20
Height
9475663.6172498