78421921 is an odd 8-digits prime number following 78421920
and preceding 78421922 . In scientific notation, it is written as 7.8421921 × 10^7.
The sum of its digits is 34. It has a total of 1 prime factors and 2 positive divisors.
There are 78421920 positive integers (up to 78421921) that are relatively prime to 78421921.
78421921 has 2 divisors, whose sum is 78421922
The reverse of 78421921 is 12912487
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
seventy-eight million four hundred twenty-one thousand nine hundred twenty-one
Scientific notation
7.8421921 × 10^7
Engineering notation
7.8421921 × 10^6
Prime Factorization
78421921
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
78421921
Product of the distinct prime numbers
The prime factorization of 78421921 is 78421921.
Since it has a total of 1 prime factors.
6 , 8 , 24 , 62 , 262 , 311 , 2477 , 6321 , 57331 , 20174 , 687560 , 665498 , 156282 , 6972691 , 16234849 , 64799126 , 99161063 , 270174025 , 7666036255 , 1109269919
n×2
156843842
n×3
235265763
n×4
313687684
n×5
392109605
n÷2
39210960.5
n÷3
26140640.333333
n÷3
19605480.25
n÷5
15684384.2
n2
6149997693330241
n3
4.8229463325653E+23
n4
3.7822471627967E+31
n5
2.9661108820332E+39
2 √n
8855.6152242518
3 √n
428.03487829719
4 √n
94.104278458802
5 √n
37.921673551918
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
78421922
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
39210961
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
8855.6152807131
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999744969
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 78421921 can be divided by 2 positive divisors.
The sum of these divisors (counting 78421921) is 78421922, the average is 39210961.
Base
System
Value
2
Binary
100101011001001111110100001
3
Ternary
12110120020122121
4
Quaternary
10223021332201
5
Quinary
130034000141
6
Senary
11440504241
8
Octal
453117641
10
Decimal
78421921
12
Duodecimal
2231b081
16
Hexadecimal
4ac9fa1
20
Vigesimal
14a2eg1
36
Base36
1aouqp
md5
5a0dc2c7b3e703197f5ddd8a59b305bc
sha1
cd29cea49b04509fbd8c74e7849b2e72a9d760c4
sha256
254043a1190f630899773b3d608c02b473e36ef2a547fb4033715dbb31c8233b
sha512
9d9f4277cebce8640661a15f4f174feb856b56bba86ef8ab6cc0fc946f7000467adf4cf999e56ecbabbc6d553de2db967f7fda98891bff809af090cff2b23a65
ripemd-160
241e383c0740fe3c86ca77f195b98f086e287f22
Diameter
156843842
Circumference
492739461.788
Area
1.932078757296E+16
Volume
2.020231035606E+24
Surface area
7.7283150291842E+16
Circumference
492739461.788
Perimeter
313687684
Area
6149997693330241
Diagonal
110905344.26555
Surface area
36899986159981446
Volume
4.8229463325653E+23
Space diagonal
135830751.59915
Perimeter
235265763
Area
2.6630271178198E+15
Altitude
67915375.799576
Surface area
2.6630271178198E+15
Volume
5.6838967617595E+22
Height
36968448.088517