78820021 is an odd 8-digits composite number following 78820020
and preceding 78820022 . In scientific notation, it is written as 7.8820021 × 10^7.
The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors.
There are 67560012 positive integers (up to 78820021) that are relatively prime to 78820021.
78820021 has 4 divisors, whose sum is 90080032
The reverse of 78820021 is 12002887
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
seventy-eight million eight hundred twenty thousand twenty-one
Scientific notation
7.8820021 × 10^7
Engineering notation
7.8820021 × 10^6
Prime Factorization
7 × 11260003
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
78820021
Product of the distinct prime numbers
The prime factorization of 78820021 is 7 × 11260003.
Since it has a total of 2 prime factors.
9 , 9 , 4 , 93 , 439 , 519 , 1492 , 4289 , 3406 , 34286 , 648928 , 557452 , 1423360 , 4881593 , 64397610 , 75375564 , 451965445 , 479619299 , 2018887543 , 8439839815
n×2
157640042
n×3
236460063
n×4
315280084
n×5
394100105
n÷2
39410010.5
n÷3
26273340.333333
n÷3
19705005.25
n÷5
15764004.2
n2
6212595710440441
n3
4.8967692436143E+23
n4
3.8596345461383E+31
n5
3.0421647597895E+39
2 √n
8878.0640344616
3 √n
428.75794634327
4 √n
94.223479210129
5 √n
37.960096626941
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-78820020
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 78820021 can be divided by 4 positive divisors.
The sum of these divisors (counting 78820021) is 1, the average is 0.25.
Base
System
Value
2
Binary
100101100101011001010110101
3
Ternary
12111022110202001
4
Quaternary
10230223022311
5
Quinary
130134220041
6
Senary
11453215301
8
Octal
454531265
10
Decimal
78820021
12
Duodecimal
22491531
16
Hexadecimal
4b2b2b5
20
Vigesimal
14cca11
36
Base36
1axdx1
md5
00780f0a4c44f8c087f405b319643f7a
sha1
e9b1251250e519fe255488e5358f544befb42aad
sha256
a85ad5fd5d5c3b527704f9a01d28f75f3663b0fd3cff2e7a0da341cc254c51dc
sha512
5008dd205cdf84d3cf292e1e325cfd96e00a2439562f5bc14db07cfa895c9c2bcd6c560efd9a4819efae7a54353eef5cb93f51ad938f631796e1fe5282a723a0
ripemd-160
d35d7bbd3992447f7755a74d142af254d3d428f7
Diameter
157640042
Circumference
495240797.85879
Area
1.9517445043643E+16
Volume
2.0511539042751E+24
Surface area
7.8069780174573E+16
Circumference
495240797.85879
Perimeter
315280084
Area
6212595710440441
Diagonal
111468342.68473
Surface area
37275574262642646
Volume
4.8967692436143E+23
Space diagonal
136520281.02565
Perimeter
236460063
Area
2.6901328543418E+15
Altitude
68260140.512823
Surface area
2.6901328543418E+15
Volume
5.7708978967756E+22
Height
37156114.228244