21091393 is an odd 8-digits composite number following 21091392
and preceding 21091394 . In scientific notation, it is written as 2.1091393 × 10^7.
The sum of its digits is 28. It has a total of 3 prime factors and 8 positive divisors.
There are 20810400 positive integers (up to 21091393) that are relatively prime to 21091393.
21091393 has 8 divisors, whose sum is 21374496
The reverse of 21091393 is 39319012
Previous prime number is 233
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty-one million ninety-one thousand three hundred ninety-three
Scientific notation
2.1091393 × 10^7
Engineering notation
2.1091393 × 10^6
Prime Factorization
131 × 233 × 691
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21091393
Product of the distinct prime numbers
The prime factorization of 21091393 is 131 × 233 × 691.
Since it has a total of 3 prime factors.
10 , 1 , 65 , 96 , 926 , 972 , 8992 , 7679 , 45423 , 20239 , 122970 , 994006 , 8358173 , 812408 , 99917260 , 9325020 , 732926059 , 879270456 , 62255866 , 4098659785
n×2
42182786
n×3
63274179
n×4
84365572
n×5
105456965
n÷2
10545696.5
n÷3
7030464.3333333
n÷3
5272848.25
n÷5
4218278.6
n2
444846858680449
n3
9.3824399212448E+21
n4
1.9788872767786E+29
n5
4.1737489257238E+36
2 √n
4592.5366628912
3 √n
276.29207074092
4 √n
67.768257044808
5 √n
29.162251617027
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21091392
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21091393 can be divided by 8 positive divisors.
The sum of these divisors (counting 21091393) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000011101010001000001
3
Ternary
1110200112221201
4
Quaternary
1100131101001
5
Quinary
20344411033
6
Senary
2032021201
8
Octal
120352101
10
Decimal
21091393
12
Duodecimal
7091801
16
Hexadecimal
141d441
20
Vigesimal
6bg89d
36
Base36
ck281
md5
392b45a8822b2273357e5e56d8c68513
sha1
f6b9e1df212905aec4e518d71004910bc8f5fbf9
sha256
12fe57278c3783deaad1410904de15a429ce84f9dad75346f0f2f9821cbcc84b
sha512
04cb4bd908e9136d812048a0cb76e15a0fd915bcab09be5a709c2e23bd91aa8dff564f3abd252d7d98a0e1d4c06b37438de09c3f9dc2c9cd0ed9c99185ee7097
ripemd-160
2d2d93696f910486873b75fc6cb6737c6ded65d8
Diameter
42182786
Circumference
132521130.60555
Area
1.397527623203E+15
Volume
3.9301072439107E+22
Surface area
5.590110492812E+15
Circumference
132521130.60555
Perimeter
84365572
Area
444846858680449
Diagonal
29827734.029941
Surface area
2669081152082694
Volume
9.3824399212448E+21
Space diagonal
36531364.278403
Perimeter
63274179
Area
1.9262434020549E+14
Altitude
18265682.139201
Surface area
1.9262434020549E+14
Volume
1.1057311487313E+21
Height
9942578.0099803