21081320 is an even 8-digits composite number following 21081319
and preceding 21081321 . In scientific notation, it is written as 2.1081320 × 10^7.
The sum of its digits is 17. It has a total of 6 prime factors and 32 positive divisors.
There are 7660800 positive integers (up to 21081320) that are relatively prime to 21081320.
21081320 has 32 divisors, whose sum is 40772160
The reverse of 21081320 is 02318012
Previous prime number is 71
Is Prime? no
Number parity even
Number length 8
Sum of Digits 17
Digital Root 8
Name
twenty-one million eighty-one thousand three hundred twenty
Scientific notation
2.1081320 × 10^7
Engineering notation
2.1081320 × 10^6
Prime Factorization
2 × 2 × 2 × 65 × 71 × 571
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
6
Total number of prime factors
rad
Radical
5270330
Product of the distinct prime numbers
The prime factorization of 21081320 is 2 × 2 × 2 × 65 × 71 × 571.
Since it has a total of 6 prime factors.
2 , 3 , 63 , 64 , 75 , 208 , 9919 , 179 , 14622 , 98469 , 37361 , 545677 , 9275928 , 2072916 , 74832055 , 87520553 , 753145406 , 78625581 , 7046240456 , 4060662220
n×2
42162640
n×3
63243960
n×4
84325280
n×5
105406600
n÷2
10540660
n÷3
7027106.6666667
n÷3
5270330
n÷5
4216264
n2
444422052942400
n3
9.3690035131357E+21
n4
1.9751096114154E+29
n5
4.1637917753323E+36
2 √n
4591.4398613071
3 √n
276.2480791278
4 √n
67.760164265645
5 √n
29.159465575409
1 , 2 , 4 , 8 , 65 , 71 , 130 , 142 , 260 , 284 , 520 , 568 , 571 , 1142 , 2284 , 4568 , 4615 , 9230 , 18460 , 36920 , 37115 , 40541 , 74230 , 81082 , 148460 , 162164 , 296920 , 324328 , 2635165 , 5270330 , 10540660 , 21081320
32 divisors
τ
Total Divisors
32
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21081319
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.03125
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
32
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21081320 can be divided by 32 positive divisors.
The sum of these divisors (counting 21081320) is 1, the average is 0.03125.
Base
System
Value
2
Binary
1010000011010110011101000
3
Ternary
1110200001010122
4
Quaternary
1100122303220
5
Quinary
20344100240
6
Senary
2031502412
8
Octal
120326350
10
Decimal
21081320
12
Duodecimal
7087a08
16
Hexadecimal
141ace8
20
Vigesimal
6bf360
36
Base36
cjug8
md5
8595a074f50c13e1fa263ed25b5d8f71
sha1
afa55138c955453c937ce354999a83dbded66804
sha256
5f42cf37df09e06bccd9416f1999b043b21459b61a023ba20658ca1c66d201c9
sha512
f7760232daef16e65d99074a596823dd13a541d68724f5b1b11a23273816ee7860bb72d567adc010b9de392f79a8f64b5c277688117b3e119251cd55ab50d49e
ripemd-160
63451f172302273212d210b168b5bf060b8038c6
Diameter
42162640
Circumference
132457840.07995
Area
1.3961930566171E+15
Volume
3.9244790144432E+22
Surface area
5.5847722264686E+15
Circumference
132457840.07995
Perimeter
84325280
Area
444422052942400
Diagonal
29813488.656727
Surface area
2666532317654400
Volume
9.3690035131357E+21
Space diagonal
36513917.330618
Perimeter
63243960
Area
1.9244039392508E+14
Altitude
18256958.665309
Surface area
1.9244039392508E+14
Volume
1.1041476528498E+21
Height
9937829.5522424