28706989 is an odd 8-digits composite number following 28706988
and preceding 28706990 . In scientific notation, it is written as 2.8706989 × 10^7.
The sum of its digits is 49. It has a total of 2 prime factors and 4 positive divisors.
There are 28096156 positive integers (up to 28706989) that are relatively prime to 28706989.
28706989 has 4 divisors, whose sum is 29317824
The reverse of 28706989 is 98960782
Previous prime number is 47
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 49
Digital Root 4
Name
twenty-eight million seven hundred six thousand nine hundred eighty-nine
Scientific notation
2.8706989 × 10^7
Engineering notation
2.8706989 × 10^6
Prime Factorization
47 × 610787
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28706989
Product of the distinct prime numbers
The prime factorization of 28706989 is 47 × 610787.
Since it has a total of 2 prime factors.
7 , 9 , 84 , 81 , 720 , 825 , 5690 , 7851 , 25679 , 59208 , 410891 , 704090 , 655746 , 5278161 , 2996223 , 7186582 , 256126944 , 649873413 , 9327440118 , 945788882
n×2
57413978
n×3
86120967
n×4
114827956
n×5
143534945
n÷2
14353494.5
n÷3
9568996.3333333
n÷3
7176747.25
n÷5
5741397.8
n2
824091217446121
n3
2.3657177514222E+22
n4
6.7912633467183E+29
n5
1.9495672219035E+37
2 √n
5357.8903497552
3 √n
306.19343928383
4 √n
73.197611639692
5 √n
31.01683848798
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
-28706988
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 28706989 can be divided by 4 positive divisors.
The sum of these divisors (counting 28706989) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101101100000100010101101
3
Ternary
2000000110120211
4
Quaternary
1231200202231
5
Quinary
24322110424
6
Senary
2503142421
8
Octal
155404255
10
Decimal
28706989
12
Duodecimal
9744a11
16
Hexadecimal
1b608ad
20
Vigesimal
8j8799
36
Base36
h3agd
md5
de6f46fd99b3bbca665fe293cb8ade63
sha1
918ad8fd53987a5af1710808244aae68ae419c49
sha256
dc9dc49703baa2f57b8e96cf1281c08e3e7a7df278fcdf37ecebc7ee2ef2c2f6
sha512
517b5c10e1a514ae644428f1ea4d2947006a1b87e6caeef34f79552d62533d26b2e1a2dd1a3a3769165856d95017d19e9aa93b0eccb4b87b635a30a0f8848c13
ripemd-160
75d063b5140b7dfcbc0b3ed945ba734a57e19482
Diameter
57413978
Circumference
180371331.49817
Area
2.5889589146166E+15
Volume
9.9094953444468E+22
Surface area
1.0355835658466E+16
Circumference
180371331.49817
Perimeter
114827956
Area
824091217446121
Diagonal
40597813.178695
Surface area
4944547304676726
Volume
2.3657177514222E+22
Space diagonal
49721963.480321
Perimeter
86120967
Area
3.5684196467199E+14
Altitude
24860981.74016
Surface area
3.5684196467199E+14
Volume
2.7880251073401E+21
Height
13532604.392898