78172021 is an odd 8-digits prime number following 78172020
and preceding 78172022 . In scientific notation, it is written as 7.8172021 × 10^7.
The sum of its digits is 28. It has a total of 1 prime factors and 2 positive divisors.
There are 78172020 positive integers (up to 78172021) that are relatively prime to 78172021.
78172021 has 2 divisors, whose sum is 78172022
The reverse of 78172021 is 12027187
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
seventy-eight million one hundred seventy-two thousand twenty-one
Scientific notation
7.8172021 × 10^7
Engineering notation
7.8172021 × 10^6
Prime Factorization
78172021
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
78172021
Product of the distinct prime numbers
The prime factorization of 78172021 is 78172021.
Since it has a total of 1 prime factors.
8 , 9 , 86 , 88 , 844 , 693 , 6810 , 3535 , 94936 , 41677 , 499323 , 25964 , 6320593 , 1055962 , 50385570 , 15567594 , 864991010 , 841474210 , 1846557786 , 6694095523
n×2
156344042
n×3
234516063
n×4
312688084
n×5
390860105
n÷2
39086010.5
n÷3
26057340.333333
n÷3
19543005.25
n÷5
15634404.2
n2
6110864867224441
n3
4.7769865672883E+23
n4
3.7342669425478E+31
n5
2.9191519385245E+39
2 √n
8841.4942741598
3 √n
427.57973456607
4 √n
94.029220320918
5 √n
37.897474377587
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
78172022
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
39086011
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
8841.4943307113
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999744154
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 78172021 can be divided by 2 positive divisors.
The sum of these divisors (counting 78172021) is 78172022, the average is 39086011.
Base
System
Value
2
Binary
100101010001100111101110101
3
Ternary
12110002112212001
4
Quaternary
10222030331311
5
Quinary
130003001041
6
Senary
11431255301
8
Octal
452147565
10
Decimal
78172021
12
Duodecimal
2221a531
16
Hexadecimal
4a8cf75
20
Vigesimal
148ba11
36
Base36
1ajhx1
md5
f03c50a91068b07f1fcb96baf5131ab0
sha1
33063b24f4470756280048daeefcc7045eb199cd
sha256
d580e0b60f31a3b06133627ed50cd4abb361a39740512d3e10634b776ad29164
sha512
f0d3bec106dbd68b85f4356b9ac4401f1c48b13bb1d16b45f1b5c8c0b93c359be846c03f473a4cef0dd422b789d198036c4273c3e9fd0a2d9df408257e79f82c
ripemd-160
36694b3d1efacf0586c137cea7eea458c5d60aef
Diameter
156344042
Circumference
491169293.77973
Area
1.9197848173952E+16
Volume
2.0009794541453E+24
Surface area
7.6791392695809E+16
Circumference
491169293.77973
Perimeter
312688084
Area
6110864867224441
Diagonal
110551932.29631
Surface area
36665189203346646
Volume
4.7769865672883E+23
Space diagonal
135397912.10234
Perimeter
234516063
Area
2.6460821070551E+15
Altitude
67698956.051171
Surface area
2.6460821070551E+15
Volume
5.6297326589444E+22
Height
36850644.098771