28960981 is an odd 8-digits composite number following 28960980
and preceding 28960982 . In scientific notation, it is written as 2.8960981 × 10^7.
The sum of its digits is 43. It has a total of 3 prime factors and 8 positive divisors.
There are 24656208 positive integers (up to 28960981) that are relatively prime to 28960981.
28960981 has 8 divisors, whose sum is 33321600
The reverse of 28960981 is 18906982
Previous prime number is 149
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 43
Digital Root 7
Name
twenty-eight million nine hundred sixty thousand nine hundred eighty-one
Scientific notation
2.8960981 × 10^7
Engineering notation
2.8960981 × 10^6
Prime Factorization
7 × 149 × 27767
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
28960981
Product of the distinct prime numbers
The prime factorization of 28960981 is 7 × 149 × 27767.
Since it has a total of 3 prime factors.
4 , 8 , 46 , 38 , 782 , 61 , 5461 , 1563 , 65744 , 77425 , 427081 , 82751 , 8994739 , 8946247 , 39763094 , 52194963 , 645193454 , 771706841 , 5178231645 , 9324594468
n×2
57921962
n×3
86882943
n×4
115843924
n×5
144804905
n÷2
14480490.5
n÷3
9653660.3333333
n÷3
7240245.25
n÷5
5792196.2
n2
838738420482361
n3
2.429068745956E+22
n4
7.0348213799325E+29
n5
2.0373532832262E+37
2 √n
5381.5407645023
3 √n
307.09382907966
4 √n
73.358985574381
5 √n
31.071531056668
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-28960980
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 28960981 can be divided by 8 positive divisors.
The sum of these divisors (counting 28960981) is 1, the average is 0.125.
Base
System
Value
2
Binary
1101110011110100011010101
3
Ternary
2000111100222221
4
Quaternary
1232132203111
5
Quinary
24403222411
6
Senary
2512422341
8
Octal
156364325
10
Decimal
28960981
12
Duodecimal
98479b1
16
Hexadecimal
1b9e8d5
20
Vigesimal
910291
36
Base36
h8qfp
md5
9d6cb35f9cb6a847e100d308b7f3c7da
sha1
94304bfdafc6865d19346c5c26c97cacedd6728d
sha256
aaecac94a67575a550c34a03bdcf8937b45ef70c1b22723b05eeff0c9ac79a9f
sha512
643057c4a4986cbdf668eec86551223961e358f6bedceca1e26b8aa330ce168201ca2b7a37ebf2f685a0eb15ff54b2086d2e3cf4d7c91889c037eded9798f49d
ripemd-160
95c0899dc418bad04f9b3da0e3842e613a211973
Diameter
57921962
Circumference
181967210.30071
Area
2.6349744600709E+15
Volume
1.0174859369813E+23
Surface area
1.0539897840284E+16
Circumference
181967210.30071
Perimeter
115843924
Area
838738420482361
Diagonal
40957012.10983
Surface area
5032430522894166
Volume
2.429068745956E+22
Space diagonal
50161890.529037
Perimeter
86882943
Area
3.6318438963388E+14
Altitude
25080945.264518
Surface area
3.6318438963388E+14
Volume
2.8626849703896E+21
Height
13652337.369943