28931971 is an odd 8-digits prime number following 28931970
and preceding 28931972 . In scientific notation, it is written as 2.8931971 × 10^7.
The sum of its digits is 40. It has a total of 1 prime factors and 2 positive divisors.
There are 28931970 positive integers (up to 28931971) that are relatively prime to 28931971.
28931971 has 2 divisors, whose sum is 28931972
The reverse of 28931971 is 17913982
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 40 Digital Root 4
Name
twenty-eight million nine hundred thirty-one thousand nine hundred seventy-one
Scientific notation
2.8931971 × 10^7
Engineering notation
2.8931971 × 10^6
Prime Factorization
28931971
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
28931971 Product of the distinct prime numbers
The prime factorization of 28931971 is 28931971.
Since it has a total of 1 prime factors.
7 , 7 , 45 , 25 , 122 , 458 , 3996 , 5600 , 58479 , 52182 , 662050 , 508267 , 1942400 , 9211949 , 43286973 , 82592273 , 179134847 , 457143458 , 6376883961 , 6886938674
n×2
57863942
n×3
86795913
n×4
115727884
n×5
144659855
n÷2
14465985.5
n÷3
9643990.3333333
n÷3
7232992.75
n÷5
5786394.2
n2
837058945944841
n3
2.4217765149367E+22
n4
7.0066767898629E+29
n5
2.0271696969069E+37
2 √n5378.8447644452
3 √n306.99125695268
4 √n73.340607881618
5 √n31.065303736554
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
28931972 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
14465986 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
5378.844857402 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999308723 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 28931971 can be divided by 2 positive divisors.
The sum of these divisors (counting 28931971) is 28931972, the average is 14465986.
Base
System
Value
2
Binary
1101110010111011110000011
3
Ternary
2000102220012111
4
Quaternary
1232113132003
5
Quinary
24401310341
6
Senary
2512040151
8
Octal
156273603
10
Decimal
28931971
12
Duodecimal
9833057
16
Hexadecimal
1b97783
20
Vigesimal
90g9ib
36
Base36
h841v
md5
a4120f631e97ed5bf0f7df902b372328
sha1
c4861a5e98d5d0e7dcce92a719b788914978b069
sha256
c6cc11c28a7684cdf5044664de8ab412c153c96ba61601741d86352255bac1d5
sha512
c022ee2940e06767ea8196e33f7783439f6abfbac7f6b7893e8c161ada98dd045874eabbbb3170df9960d4f8051d8b92771ef41186b48976ae93bdb03febf7ca
ripemd-160
4fb5ad427fa194bffe8f312c62d5a2fc24a10148
Diameter
57863942
Circumference
181784935.09495
Area
2.6296982352019E+15
Volume
1.0144313743948E+23
Surface area
1.0518792940808E+16
Circumference
181784935.09495
Perimeter
115727884
Area
837058945944841
Diagonal
40915985.774385
Surface area
5022353675669046
Volume
2.4217765149367E+22
Space diagonal
50111643.735109
Perimeter
86795913
Area
3.6245715582663E+14
Altitude
25055821.867555
Surface area
3.6245715582663E+14
Volume
2.8540909937167E+21
Height
13638661.924795