21081392 is an even 8-digits composite number following 21081391
and preceding 21081393 . In scientific notation, it is written as 2.1081392 × 10^7.
The sum of its digits is 26. It has a total of 5 prime factors and 10 positive divisors.
There are 10540688 positive integers (up to 21081392) that are relatively prime to 21081392.
21081392 has 10 divisors, whose sum is 40845228
The reverse of 21081392 is 29318012
Previous prime number is 2
Is Prime? no
Number parity even
Number length 8
Sum of Digits 26
Digital Root 8
Name
twenty-one million eighty-one thousand three hundred ninety-two
Scientific notation
2.1081392 × 10^7
Engineering notation
2.1081392 × 10^6
Prime Factorization
2 × 2 × 2 × 2 × 1317587
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
2635174
Product of the distinct prime numbers
The prime factorization of 21081392 is 2 × 2 × 2 × 2 × 1317587.
Since it has a total of 5 prime factors.
3 , 6 , 40 , 95 , 976 , 213 , 54 , 164 , 9375 , 27598 , 389994 , 492851 , 2892222 , 6232490 , 83936729 , 94585719 , 593926507 , 981107526 , 7506056854 , 4867580051
n×2
42162784
n×3
63244176
n×4
84325568
n×5
105406960
n÷2
10540696
n÷3
7027130.6666667
n÷3
5270348
n÷5
4216278.4
n2
444425088657664
n3
9.369099508627E+21
n4
1.9751365942837E+29
n5
4.163862879764E+36
2 √n
4591.4477019781
3 √n
276.24839362169
4 √n
67.76022212167
5 √n
29.159485493314
10 divisors
τ
Total Divisors
10
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21081391
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.1
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
10
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21081392 can be divided by 10 positive divisors.
The sum of these divisors (counting 21081392) is 1, the average is 0.1.
Base
System
Value
2
Binary
1010000011010110100110000
3
Ternary
1110200001020022
4
Quaternary
1100122310300
5
Quinary
20344101032
6
Senary
2031503012
8
Octal
120326460
10
Decimal
21081392
12
Duodecimal
7087a68
16
Hexadecimal
141ad30
20
Vigesimal
6bf39c
36
Base36
cjui8
md5
dd16099ea1d7072fa35d03ffa9d3681a
sha1
2dd3400ee33464acb25fd08ec9c6a9f321ab0f5d
sha256
ef97928f22c08b164b3ba67addb64f62c932bef499a0b241bff4d1faccb0a230
sha512
f9a2dd4a548ac84404b29813adb63e720d91f873922eb4fd7cb18e6a40402aca9061e32e687e4096b15f0f29108bf2d5d02abc28c66c23aad7b9514271e374fe
ripemd-160
1f2b70a9c3b6b07aae393a0bb140d28417df6114
Diameter
42162784
Circumference
132458292.46929
Area
1.3962025935979E+15
Volume
3.9245192249406E+22
Surface area
5.5848103743916E+15
Circumference
132458292.46929
Perimeter
84325568
Area
444425088657664
Diagonal
29813590.480104
Surface area
2666550531945984
Volume
9.369099508627E+21
Space diagonal
36514042.038276
Perimeter
63244176
Area
1.9244170842834E+14
Altitude
18257021.019138
Surface area
1.9244170842834E+14
Volume
1.1041589660269E+21
Height
9937863.4933679