28931143 is an odd 8-digits composite number following 28931142
and preceding 28931144 . In scientific notation, it is written as 2.8931143 × 10^7.
The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors.
There are 28564848 positive integers (up to 28931143) that are relatively prime to 28931143.
28931143 has 4 divisors, whose sum is 29297440
The reverse of 28931143 is 34113982
Previous prime number is 79
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty-eight million nine hundred thirty-one thousand one hundred forty-three
Scientific notation
2.8931143 × 10^7
Engineering notation
2.8931143 × 10^6
Prime Factorization
79 × 366217
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28931143
Product of the distinct prime numbers
The prime factorization of 28931143 is 79 × 366217.
Since it has a total of 2 prime factors.
6 , 9 , 85 , 7 , 286 , 298 , 5806 , 4528 , 37898 , 93312 , 913943 , 181077 , 2127094 , 1187472 , 57403920 , 96199619 , 256153019 , 863674991 , 1891735685 , 3990843852
n×2
57862286
n×3
86793429
n×4
115724572
n×5
144655715
n÷2
14465571.5
n÷3
9643714.3333333
n÷3
7232785.75
n÷5
5786228.6
n2
837011035286449
n3
2.421568595445E+22
n4
7.0058747319129E+29
n5
2.0268796370906E+37
2 √n
5378.7677956945
3 √n
306.9883283449
4 √n
73.340083144857
5 √n
31.065125923808
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
-28931142
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 28931143 can be divided by 4 positive divisors.
The sum of these divisors (counting 28931143) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101110010111010001000111
3
Ternary
2000102212001211
4
Quaternary
1232113101013
5
Quinary
24401244033
6
Senary
2512032251
8
Octal
156272107
10
Decimal
28931143
12
Duodecimal
9832687
16
Hexadecimal
1b97447
20
Vigesimal
90g7h3
36
Base36
h83ev
md5
3fdcb325a048e1da6c8881bbbb4b07af
sha1
ddeee7d37e6a3bee3cb0599915c72692810d39be
sha256
60bf5ec45c15f186c4019ae828babc14eeb2d5fe90bcec744583763328f39664
sha512
f2727cb4e84c978711e043910bf9cbe52377831234875a834a68ed0a2ef7e4ba8bfb9726796bcb8631e3694768a1d27b94ed1e348322d2536e05c61b16c61a99
ripemd-160
33046abac23d52f31e8f33f71b7dab62592e5c73
Diameter
57862286
Circumference
181779732.61751
Area
2.6295477194295E+15
Volume
1.0143442812818E+23
Surface area
1.0518190877718E+16
Circumference
181779732.61751
Perimeter
115724572
Area
837011035286449
Diagonal
40914814.805555
Surface area
5022066211718694
Volume
2.421568595445E+22
Space diagonal
50110209.597041
Perimeter
86793429
Area
3.6243640990299E+14
Altitude
25055104.79852
Surface area
3.6243640990299E+14
Volume
2.8538459582459E+21
Height
13638271.601852