128545221 is an odd 9-digits composite number following 128545220
and preceding 128545222 . In scientific notation, it is written as 1.28545221 × 10^8.
The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors.
There are 73454400 positive integers (up to 128545221) that are relatively prime to 128545221.
128545221 has 8 divisors, whose sum is 195878464
The reverse of 128545221 is 122545821
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 30
Digital Root 3
Name
one hundred twenty-eight million five hundred forty-five thousand two hundred twenty-one
Scientific notation
1.28545221 × 10^8
Engineering notation
1.28545221 × 10^6
Prime Factorization
3 × 7 × 6121201
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
128545221
Product of the distinct prime numbers
The prime factorization of 128545221 is 3 × 7 × 6121201.
Since it has a total of 3 prime factors.
8 , 8 , 61 , 16 , 280 , 924 , 8134 , 501 , 71052 , 53380 , 299726 , 361505 , 3218955 , 2620358 , 11011205 , 75694642 , 939312512 , 731353947 , 8221080281 , 3942753186
n×2
257090442
n×3
385635663
n×4
514180884
n×5
642726105
n÷2
64272610.5
n÷3
42848407
n÷3
32136305.25
n÷5
25709044.2
n2
16523873841938841
n3
2.1240650147881E+24
n4
2.7303840674431E+32
n5
3.5097782336435E+40
2 √n
11337.778486106
3 √n
504.68296409704
4 √n
106.47900490757
5 √n
41.861153088928
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
-128545220
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 128545221 can be divided by 8 positive divisors.
The sum of these divisors (counting 128545221) is 1, the average is 0.125.
Base
System
Value
2
Binary
111101010010111000111000101
3
Ternary
22221212202220010
4
Quaternary
13222113013011
5
Quinary
230401421341
6
Senary
20431100433
8
Octal
752270705
10
Decimal
128545221
12
Duodecimal
37071719
16
Hexadecimal
7a971c5
20
Vigesimal
2038311
36
Base36
24j64l
md5
494a56cb9282cc88309defe3737d3bda
sha1
84151c6a044fa446834709911f7d677cfe3b8e8d
sha256
86958cad6f74e3cacaa90f3262d9449e074643db0e3f7c728ede23a5a8b24e06
sha512
e8d53f4ffa878c9e4ea7061175f120395b6e2a8cb74f842a473dcff6260d9a2a79b635a4458eb8c68be8417828cceb58e74ae9149e41337ba74d43ffb9ec804a
ripemd-160
4effae49a745fea3803bf0fc587e320c59525f7a
Diameter
257090442
Circumference
807673443.89535
Area
5.191128067068E+16
Volume
8.8972627282741E+24
Surface area
2.0764512268272E+17
Circumference
807673443.89535
Perimeter
514180884
Area
16523873841938841
Diagonal
181790394.91645
Surface area
99143243051633046
Volume
2.1240650147881E+24
Space diagonal
222646853.84217
Perimeter
385635663
Area
7.1550472580241E+15
Altitude
111323426.92108
Surface area
7.1550472580241E+15
Volume
2.503234626063E+23
Height
60596798.305482