820121661 is an odd 9-digits composite number following 820121660
and preceding 820121662 . In scientific notation, it is written as 8.20121661 × 10^8.
The sum of its digits is 27. It has a total of 5 prime factors and 24 positive divisors.
There are 542782656 positive integers (up to 820121661) that are relatively prime to 820121661.
820121661 has 24 divisors, whose sum is 1193250240
The reverse of 820121661 is 166121028
Previous prime number is 313
Is Prime? no Number parity odd Number length 9 Sum of Digits 27 Digital Root 9
Name
eight hundred twenty million one hundred twenty-one thousand six hundred sixty-one
Scientific notation
8.20121661 × 10^8
Engineering notation
8.20121661 × 10^6
Prime Factorization
3 × 3 × 347 × 313 × 839
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
5 Total number of prime factors
rad Radical
273373887 Product of the distinct prime numbers
The prime factorization of 820121661 is 3 × 3 × 347 × 313 × 839.
Since it has a total of 5 prime factors.
2 , 2 , 7 , 35 , 96 , 1000 , 7632 , 5596 , 13861 , 49166 , 135304 , 869956 , 1219468 , 4004687 , 40770776 , 86440260 , 803137910 , 912726549 , 8126273943 , 6644929096
n×2
1640243322
n×3
2460364983
n×4
3280486644
n×5
4100608305
n÷2
410060830.5
n÷3
273373887
n÷3
205030415.25
n÷5
164024332.2
n2
672599538841398921
n3
5.5161345098244E+26
n4
4.5239013964966E+35
n5
3.710149527495E+44
2 √n28637.76634097
3 √n936.0364500653
4 √n169.22696694372
5 √n60.642298877108
1 , 3 , 9 , 313 , 347 , 839 , 939 , 1041 , 2517 , 2817 , 3123 , 7551 , 108611 , 262607 , 291133 , 325833 , 787821 , 873399 , 977499 , 2363463 , 2620197 , 91124629 , 273373887 , 820121661
24 divisors
τ Total Divisors
24 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-820121660 Sum of the proper positive divisors of n
A Arithmetic Mean
0.041666666666667 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
24 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 820121661 can be divided by 24 positive divisors.
The sum of these divisors (counting 820121661) is 1, the average is 0.041666666666667.
Base
System
Value
2
Binary
110000111000100001000000111101
3
Ternary
2010011012111102100
4
Quaternary
300320201000331
5
Quinary
3134422343121
6
Senary
213214015313
8
Octal
6070410075
10
Decimal
820121661
12
Duodecimal
1aa7a7539
16
Hexadecimal
30e2103d
20
Vigesimal
cg5f431
36
Base36
dka1x9
md5
a3199bdb6e1892d445a121fd77fcf724
sha1
e3788544eee5495b7da55b31ffe190eecdfa3b68
sha256
e5f2eeb6b051c79ad7d58350cddeb39bf9bc87598cd13fb1b0c68e970c96abbb
sha512
afe1c1b970c8555d9c3c8e38bfd33c2e43f68d9c16466f738575fdd1e7e342125341cf34e24454dc22fcc3deda8e9c59fdd5d3affc795d8abd4887556b6b147c
ripemd-160
65008adbef616a8526a139a59a4f562d7a0cf326
Diameter
1640243322
Circumference
5152976370.4949
Area
2.113033770032E+18
Volume
2.3105930203037E+27
Surface area
8.4521350801281E+18
Circumference
5152976370.4949
Perimeter
3280486644
Area
672599538841398921
Diagonal
1159827175.7821
Surface area
4035597233048393526
Volume
5.5161345098244E+26
Space diagonal
1420492385.2398
Perimeter
2460364983
Area
2.9124414360517E+17
Altitude
710246192.61989
Surface area
2.9124414360517E+17
Volume
6.5008268630566E+25
Height
386609058.59405