128217821 is an odd 9-digits prime number following 128217820
and preceding 128217822 . In scientific notation, it is written as 1.28217821 × 10^8.
The sum of its digits is 32. It has a total of 1 prime factors and 2 positive divisors.
There are 128217820 positive integers (up to 128217821) that are relatively prime to 128217821.
128217821 has 2 divisors, whose sum is 128217822
The reverse of 128217821 is 128712821
Previous prime number is 1
Is Prime? yes Number parity odd Number length 9 Sum of Digits 32 Digital Root 5
Name
one hundred twenty-eight million two hundred seventeen thousand eight hundred twenty-one
Scientific notation
1.28217821 × 10^8
Engineering notation
1.28217821 × 10^6
Prime Factorization
128217821
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
128217821 Product of the distinct prime numbers
The prime factorization of 128217821 is 128217821.
Since it has a total of 1 prime factors.
3 , 5 , 47 , 57 , 614 , 372 , 3045 , 6478 , 92859 , 17652 , 497779 , 230118 , 2702716 , 2014547 , 18720907 , 61328187 , 780867363 , 927090831 , 1403195372 , 9088239550
n×2
256435642
n×3
384653463
n×4
512871284
n×5
641089105
n÷2
64108910.5
n÷3
42739273.666667
n÷3
32054455.25
n÷5
25643564.2
n2
16439809621988041
n3
2.1078765673861E+24
n4
2.7026734040721E+32
n5
3.4653089474478E+40
2 √n11323.330826219
3 √n504.25413010131
4 √n106.41114051742
5 √n41.839807564617
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
128217822 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
64108911 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
11323.330870376 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999844015 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 128217821 can be divided by 2 positive divisors.
The sum of these divisors (counting 128217821) is 128217822, the average is 64108911.
Base
System
Value
2
Binary
111101001000111001011011101
3
Ternary
22221021010210012
4
Quaternary
13221013023131
5
Quinary
230310432241
6
Senary
20420053005
8
Octal
751071335
10
Decimal
128217821
12
Duodecimal
36b34165
16
Hexadecimal
7a472dd
20
Vigesimal
20174b1
36
Base36
24c5i5
md5
e1fdec14953c8f0162bee22841501d26
sha1
868e0e61db260e4491325b69f0c478faee820d26
sha256
c6288e0a87305b4dcfa0af91d355f95076e8225de14f968d199651add604f189
sha512
a33f35dc4d275c3bf29c045cad4d071157698320984e04beda4a9e58e7849e4639ea9d1ad86feab24f7dae16936bcb8881aea69df8a5cfb68b5726193aa7b7a4
ripemd-160
1a203526ef3f3fc54b4af0755b310af3f580a088
Diameter
256435642
Circumference
805616329.02578
Area
5.1647185134852E+16
Volume
8.8294527183658E+24
Surface area
2.0658874053941E+17
Circumference
805616329.02578
Perimeter
512871284
Area
16439809621988041
Diagonal
181327381.39613
Surface area
98638857731928246
Volume
2.1078765673861E+24
Space diagonal
222079780.40777
Perimeter
384653463
Area
7.1186463830107E+15
Altitude
111039890.20389
Surface area
7.1186463830107E+15
Volume
2.4841563578383E+23
Height
60442460.465375