28001812 is an even 8-digits composite number following 28001811
and preceding 28001813 . In scientific notation, it is written as 2.8001812 × 10^7.
The sum of its digits is 22. It has a total of 4 prime factors and 12 positive divisors.
There are 13938776 positive integers (up to 28001812) that are relatively prime to 28001812.
28001812 has 12 divisors, whose sum is 49220640
The reverse of 28001812 is 21810082
Previous prime number is 227
Is Prime? no
Number parity even
Number length 8
Sum of Digits 22
Digital Root 4
Name
twenty-eight million one thousand eight hundred twelve
Scientific notation
2.8001812 × 10^7
Engineering notation
2.8001812 × 10^6
Prime Factorization
2 × 2 × 227 × 30839
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
14000906
Product of the distinct prime numbers
The prime factorization of 28001812 is 2 × 2 × 227 × 30839.
Since it has a total of 4 prime factors.
7 , 3 , 49 , 38 , 701 , 922 , 5886 , 6916 , 25542 , 18566 , 761700 , 880187 , 9362479 , 6699708 , 39910739 , 74194802 , 431270640 , 538069201 , 3402121239 , 9363198393
n×2
56003624
n×3
84005436
n×4
112007248
n×5
140009060
n÷2
14000906
n÷3
9333937.3333333
n÷3
7000453
n÷5
5600362.4
n2
784101475283344
n3
2.1956262099807E+22
n4
6.1481512354152E+29
n5
1.7215937504166E+37
2 √n
5291.6738372655
3 √n
303.66544740248
4 √n
72.743892095938
5 √n
30.862935207371
1 , 2 , 4 , 227 , 454 , 908 , 30839 , 61678 , 123356 , 7000453 , 14000906 , 28001812
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-28001811
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 28001812 can be divided by 12 positive divisors.
The sum of these divisors (counting 28001812) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1101010110100011000010100
3
Ternary
1221200122021011
4
Quaternary
1222310120110
5
Quinary
24132024222
6
Senary
2440102004
8
Octal
152643024
10
Decimal
28001812
12
Duodecimal
9464904
16
Hexadecimal
1ab4614
20
Vigesimal
8f04ac
36
Base36
go6c4
md5
d5a1c2b301fb15f787dce6aab794f4ca
sha1
90344c7a72f34d39134db57716f76c57fa09cd05
sha256
c0f5aface4492fcea218dd9e82e5490fa3191bde737154fb07f4170a7291aa90
sha512
112581ecfd82774752e75065327cb06ba6840aba6fbd24c2b6cd135cf7686567b433874fbbf1b7d35389d6f3da8542175a605bb0687ea6708d0ba1d2a24f2074
ripemd-160
4dee4e52ec891f5d331207d1558fc5432eea6e3e
Diameter
56003624
Circumference
175940573.73281
Area
2.4633274344191E+15
Volume
9.1970175617394E+22
Surface area
9.8533097376763E+15
Circumference
175940573.73281
Perimeter
112007248
Area
784101475283344
Diagonal
39600542.301422
Surface area
4704608851700064
Volume
2.1956262099807E+22
Space diagonal
48500561.087992
Perimeter
84005436
Area
3.3952589837012E+14
Altitude
24250280.543996
Surface area
3.3952589837012E+14
Volume
2.5875703033804E+21
Height
13200180.767141