21081711 is an odd 8-digits composite number following 21081710
and preceding 21081712 . In scientific notation, it is written as 2.1081711 × 10^7.
The sum of its digits is 21. It has a total of 4 prime factors and 12 positive divisors.
There are 12046608 positive integers (up to 21081711) that are relatively prime to 21081711.
21081711 has 12 divisors, whose sum is 32698392
The reverse of 21081711 is 11718012
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 21
Digital Root 3
Name
twenty-one million eighty-one thousand seven hundred eleven
Scientific notation
2.1081711 × 10^7
Engineering notation
2.1081711 × 10^6
Prime Factorization
3 × 7 × 7 × 143413
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
3011673
Product of the distinct prime numbers
The prime factorization of 21081711 is 3 × 7 × 7 × 143413.
Since it has a total of 4 prime factors.
5 , 1 , 12 , 93 , 838 , 202 , 9910 , 963 , 10782 , 51187 , 672762 , 706925 , 7540523 , 3037632 , 61113315 , 31352704 , 302351989 , 838907757 , 5297280952 , 4657146467
n×2
42163422
n×3
63245133
n×4
84326844
n×5
105408555
n÷2
10540855.5
n÷3
7027237
n÷3
5270427.75
n÷5
4216342.2
n2
444438538687521
n3
9.3695248298726E+21
n4
1.975256146707E+29
n5
4.164177923585E+36
2 √n
4591.4824403454
3 √n
276.24978699573
4 √n
67.760478454224
5 √n
29.159573740044
1 , 3 , 7 , 21 , 49 , 147 , 143413 , 430239 , 1003891 , 3011673 , 7027237 , 21081711
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21081710
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21081711 can be divided by 12 positive divisors.
The sum of these divisors (counting 21081711) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1010000011010111001101111
3
Ternary
1110200001200010
4
Quaternary
1100122321233
5
Quinary
20344103321
6
Senary
2031504303
8
Octal
120327157
10
Decimal
21081711
12
Duodecimal
7088093
16
Hexadecimal
141ae6f
20
Vigesimal
6bf45b
36
Base36
cjur3
md5
38afc172b61c41d58452be813a663771
sha1
155eafde38ca671ab3a00cef4bec9ac2d1b7810a
sha256
e0fe2b4aaa5ea554a783e459d72fcc57ac5167856aadd6a6b4b325581485590b
sha512
6bfe3afef33dc50878a4ee2cc478decc6770041cd3991710cc3a5e8c9fc3c4018bb3540158a51009b245b2ace3a79248e972bde944ef94feda00277e95be6ef4
ripemd-160
f233c5c4f3db91f91f0c4d415dc86c18422144ed
Diameter
42163422
Circumference
132460296.80541
Area
1.3962448481129E+15
Volume
3.9246973830873E+22
Surface area
5.5849793924516E+15
Circumference
132460296.80541
Perimeter
84326844
Area
444438538687521
Diagonal
29814041.61423
Surface area
2666631232125126
Volume
9.3695248298726E+21
Space diagonal
36514594.562484
Perimeter
63245133
Area
1.9244753246211E+14
Altitude
18257297.281242
Surface area
1.9244753246211E+14
Volume
1.1042090906164E+21
Height
9938013.87141