21108907 is an odd 8-digits composite number following 21108906
and preceding 21108908 . In scientific notation, it is written as 2.1108907 × 10^7.
The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors.
There are 20538360 positive integers (up to 21108907) that are relatively prime to 21108907.
21108907 has 4 divisors, whose sum is 21679456
The reverse of 21108907 is 70980112
Previous prime number is 37
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty-one million one hundred eight thousand nine hundred seven
Scientific notation
2.1108907 × 10^7
Engineering notation
2.1108907 × 10^6
Prime Factorization
37 × 570511
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21108907
Product of the distinct prime numbers
The prime factorization of 21108907 is 37 × 570511.
Since it has a total of 2 prime factors.
3 , 4 , 68 , 36 , 816 , 35 , 3989 , 9263 , 75742 , 72341 , 810147 , 678050 , 759017 , 6310529 , 80397414 , 96967525 , 798457726 , 75454331 , 7737449906 , 2640466093
n×2
42217814
n×3
63326721
n×4
84435628
n×5
105544535
n÷2
10554453.5
n÷3
7036302.3333333
n÷3
5277226.75
n÷5
4221781.4
n2
445585954734649
n3
9.4058324789999E+21
n4
1.9854684305679E+29
n5
4.1911068452293E+36
2 √n
4594.443056563
3 √n
276.36852594925
4 √n
67.782321121093
5 √n
29.167093194937
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
-21108906
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 21108907 can be divided by 4 positive divisors.
The sum of these divisors (counting 21108907) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000100001100010101011
3
Ternary
1110201102222101
4
Quaternary
1100201202223
5
Quinary
20400441112
6
Senary
2032234231
8
Octal
120414253
10
Decimal
21108907
12
Duodecimal
709b977
16
Hexadecimal
14218ab
20
Vigesimal
6bic57
36
Base36
ckfqj
md5
9aa9c7dbfde8905708770983d112b000
sha1
0e99ce8c6318e20e535a1b988b58f2593d7ef2b0
sha256
f9c9d83fead092d9442c620ccfaf1000b2eacd8ac2d2698bee0f2d323f98b206
sha512
1314bce9d3ddcb14c3fef2da7e5c91511380462fbc51e593bdda913fc49fb580c1de7e9f11ad5e6d1e419e3d4c5328ddd007e5a8f1b6f5d2fa25a473863b849e
ripemd-160
56ce50c0a8cd16b63bbe6f0acb9cc742de7e7dd5
Diameter
42217814
Circumference
132631174.31302
Area
1.3998495619372E+15
Volume
3.9399058955897E+22
Surface area
5.5993982477487E+15
Circumference
132631174.31302
Perimeter
84435628
Area
445585954734649
Diagonal
29852502.566272
Surface area
2673515728407894
Volume
9.4058324789999E+21
Space diagonal
36561699.416246
Perimeter
63326721
Area
1.9294437818487E+14
Altitude
18280849.708123
Surface area
1.9294437818487E+14
Volume
1.1084879881009E+21
Height
9950834.1887575