21084785 is an odd 8-digits composite number following 21084784
and preceding 21084786 . In scientific notation, it is written as 2.1084785 × 10^7.
The sum of its digits is 35. It has a total of 2 prime factors and 4 positive divisors.
There are 16867824 positive integers (up to 21084785) that are relatively prime to 21084785.
21084785 has 4 divisors, whose sum is 25301748
The reverse of 21084785 is 58748012
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 35
Digital Root 8
Name
twenty-one million eighty-four thousand seven hundred eighty-five
Scientific notation
2.1084785 × 10^7
Engineering notation
2.1084785 × 10^6
Prime Factorization
5 × 4216957
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21084785
Product of the distinct prime numbers
The prime factorization of 21084785 is 5 × 4216957.
Since it has a total of 2 prime factors.
6 , 2 , 72 , 37 , 937 , 840 , 2631 , 5175 , 56726 , 47867 , 600447 , 104115 , 1211553 , 7658946 , 68754996 , 18954774 , 179512819 , 743650378 , 9154796394 , 2316849572
n×2
42169570
n×3
63254355
n×4
84339140
n×5
105423925
n÷2
10542392.5
n÷3
7028261.6666667
n÷3
5271196.25
n÷5
4216957
n2
444568158496225
n3
9.3736240397388E+21
n4
1.9764084754872E+29
n5
4.1672147777826E+36
2 √n
4591.8171784164
3 √n
276.26321333439
4 √n
67.762948418855
5 √n
29.160424062886
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
-21084784
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 21084785 can be divided by 4 positive divisors.
The sum of these divisors (counting 21084785) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000011011101001110001
3
Ternary
1110200012212222
4
Quaternary
1100123221301
5
Quinary
20344203120
6
Senary
2031530425
8
Octal
120335161
10
Decimal
21084785
12
Duodecimal
7089a15
16
Hexadecimal
141ba71
20
Vigesimal
6bfbj5
36
Base36
cjx4h
md5
f9a34bdc93be56d4c9a3263f83430d49
sha1
1abb45b9228e82e1d556bf87bbb13444ecbf0d2a
sha256
96b240f59dd068ff4bce25c011798bfa5643c4098a1ae7d1ca3001e9b97433b2
sha512
aff84c2af0b3e90d423c4d99a1d63db895543ede22811f38e167033063652e18fbd9cabae9f0e92c20a2f5ecae70a12bcc4e4d5cce826412253a327396cd842d
ripemd-160
eb4565ce32a4799f6d01c76ab13aa6f5bd357306
Diameter
42169570
Circumference
132479611.31704
Area
1.3966520607517E+15
Volume
3.9264144561008E+22
Surface area
5.5866082430067E+15
Circumference
132479611.31704
Perimeter
84339140
Area
444568158496225
Diagonal
29818388.906721
Surface area
2667408950977350
Volume
9.3736240397388E+21
Space diagonal
36519918.886666
Perimeter
63254355
Area
1.925036594857E+14
Altitude
18259959.443333
Surface area
1.925036594857E+14
Volume
1.1046921871321E+21
Height
9939462.9689069