21107978 is an even 8-digits composite number following 21107977
and preceding 21107979 . In scientific notation, it is written as 2.1107978 × 10^7.
The sum of its digits is 35. It has a total of 3 prime factors and 8 positive divisors.
There are 10542880 positive integers (up to 21107978) that are relatively prime to 21107978.
21107978 has 8 divisors, whose sum is 31695300
The reverse of 21107978 is 87970112
Previous prime number is 10061
Is Prime? no
Number parity even
Number length 8
Sum of Digits 35
Digital Root 8
Name
twenty-one million one hundred seven thousand nine hundred seventy-eight
Scientific notation
2.1107978 × 10^7
Engineering notation
2.1107978 × 10^6
Prime Factorization
2 × 10061 × 1049
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21107978
Product of the distinct prime numbers
The prime factorization of 21107978 is 2 × 10061 × 1049.
Since it has a total of 3 prime factors.
7 , 10 , 61 , 67 , 659 , 973 , 5081 , 878 , 64923 , 59661 , 410079 , 627890 , 1349440 , 1933177 , 85500605 , 42699827 , 356807469 , 694263971 , 5350467325 , 9200352406
n×2
42215956
n×3
63323934
n×4
84431912
n×5
105539890
n÷2
10553989
n÷3
7035992.6666667
n÷3
5276994.5
n÷5
4221595.6
n2
445546735248484
n3
9.4045906855968E+21
n4
1.9851189329058E+29
n5
4.190184676316E+36
2 √n
4594.3419550573
3 √n
276.36447157658
4 √n
67.781575336203
5 √n
29.166836462492
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
-21107977
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 21107978 can be divided by 8 positive divisors.
The sum of these divisors (counting 21107978) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000100001010100001010
3
Ternary
1110201101200222
4
Quaternary
1100201110022
5
Quinary
20400423403
6
Senary
2032230042
8
Octal
120412412
10
Decimal
21107978
12
Duodecimal
709b322
16
Hexadecimal
142150a
20
Vigesimal
6bi9ii
36
Base36
ckf0q
md5
753cd536c13512830e3b4163258aef20
sha1
7440c7d3053277d344744ee664ff4ac1c15a9f06
sha256
295de10b865674bf274e3d80a59d4e6be9d28de0520e5c2eb30f9b6aacc7710a
sha512
ce66afe5bea780ce6150938f5b908e765683a7985e394fc2175777e1905bb8f32d7990674fb1f68ce6bcb3ec48c0d99dbec441bf807956268d29b9df1e345367
ripemd-160
4f9fcc0e3d7e799818fe4f73a49482b92d7a1444
Diameter
42215956
Circumference
132625337.23387
Area
1.3997263502876E+15
Volume
3.9393857343853E+22
Surface area
5.5989054011502E+15
Circumference
132625337.23387
Perimeter
84431912
Area
445546735248484
Diagonal
29851188.761873
Surface area
2673280411490904
Volume
9.4045906855968E+21
Space diagonal
36560090.341046
Perimeter
63323934
Area
1.929273956492E+14
Altitude
18280045.170523
Surface area
1.929273956492E+14
Volume
1.1083416413449E+21
Height
9950396.2539576