28381505 is an odd 8-digits composite number following 28381504
and preceding 28381506 . In scientific notation, it is written as 2.8381505 × 10^7.
The sum of its digits is 32. It has a total of 4 prime factors and 16 positive divisors.
There are 21940800 positive integers (up to 28381505) that are relatively prime to 28381505.
28381505 has 16 divisors, whose sum is 35221824
The reverse of 28381505 is 50518382
Previous prime number is 101
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5
Name
twenty-eight million three hundred eighty-one thousand five hundred five
Scientific notation
2.8381505 × 10^7
Engineering notation
2.8381505 × 10^6
Prime Factorization
5 × 43 × 101 × 1307
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
28381505
Product of the distinct prime numbers
The prime factorization of 28381505 is 5 × 43 × 101 × 1307.
Since it has a total of 4 prime factors.
3 , 1 , 27 , 37 , 294 , 270 , 5720 , 7274 , 93883 , 16496 , 506359 , 759701 , 6523067 , 6533839 , 27397006 , 96323247 , 965363247 , 594224018 , 5671061588 , 139761607
n×2
56763010
n×3
85144515
n×4
113526020
n×5
141907525
n÷2
14190752.5
n÷3
9460501.6666667
n÷3
7095376.25
n÷5
5676301
n2
805509826065025
n3
2.2861581156014E+22
n4
6.4884607988731E+29
n5
1.8415228260552E+37
2 √n
5327.4294927291
3 √n
305.03181608437
4 √n
72.989242308227
5 √n
30.946182633035
1 , 5 , 43 , 101 , 215 , 505 , 1307 , 4343 , 6535 , 21715 , 56201 , 132007 , 281005 , 660035 , 5676301 , 28381505
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-28381504
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 28381505 can be divided by 16 positive divisors.
The sum of these divisors (counting 28381505) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1101100010001000101000001
3
Ternary
1222101221002212
4
Quaternary
1230101011001
5
Quinary
24231202010
6
Senary
2452151505
8
Octal
154210501
10
Decimal
28381505
12
Duodecimal
9608595
16
Hexadecimal
1b11141
20
Vigesimal
8h7df5
36
Base36
gwbb5
md5
5c45c139361f77f6ca5da415993db11c
sha1
55a0072f0fbc82ed5a1fa4715f608bdb67e96ca7
sha256
87f484535eb74c29d4e49ce471898e20906d6c7b667adcc8ad8d03b94a83b527
sha512
b7006555588cc4459358957b7f21dbad7226498cfaf508e9e613848bfc4235345406de8d68991f853b4065732d904bc812ee0d87f8b0ce7fe5bc2ee8fb6f1941
ripemd-160
9973f77ace4173f8289d3fbdcedc5bed238eeb43
Diameter
56763010
Circumference
178326255.21164
Area
2.5305837519603E+15
Volume
9.5762367212239E+22
Surface area
1.0122335007841E+16
Circumference
178326255.21164
Perimeter
113526020
Area
805509826065025
Diagonal
40137509.29156
Surface area
4833058956390150
Volume
2.2861581156014E+22
Space diagonal
49158208.65527
Perimeter
85144515
Area
3.4879598618515E+14
Altitude
24579104.327635
Surface area
3.4879598618515E+14
Volume
2.694263177344E+21
Height
13379169.763853