21102509 is an odd 8-digits composite number following 21102508
and preceding 21102510 . In scientific notation, it is written as 2.1102509 × 10^7.
The sum of its digits is 20. It has a total of 2 prime factors and 4 positive divisors.
There are 20908800 positive integers (up to 21102509) that are relatively prime to 21102509.
21102509 has 4 divisors, whose sum is 21296220
The reverse of 21102509 is 90520112
Previous prime number is 109
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 20
Digital Root 2
Name
twenty-one million one hundred two thousand five hundred nine
Scientific notation
2.1102509 × 10^7
Engineering notation
2.1102509 × 10^6
Prime Factorization
109 × 193601
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21102509
Product of the distinct prime numbers
The prime factorization of 21102509 is 109 × 193601.
Since it has a total of 2 prime factors.
7 , 9 , 5 , 25 , 792 , 640 , 7209 , 8428 , 40147 , 47033 , 432454 , 835489 , 739068 , 3553413 , 33138874 , 7123455 , 84085184 , 861359624 , 7853161817 , 4129217695
n×2
42205018
n×3
63307527
n×4
84410036
n×5
105512545
n÷2
10551254.5
n÷3
7034169.6666667
n÷3
5275627.25
n÷5
4220501.8
n2
445315886095081
n3
9.3972824941644E+21
n4
1.9830623840865E+29
n5
4.1847591807746E+36
2 √n
4593.74672789
3 √n
276.34060117318
4 √n
67.777184419906
5 √n
29.165324901669
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
-21102508
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 21102509 can be divided by 4 positive divisors.
The sum of these divisors (counting 21102509) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000011111111110101101
3
Ternary
1110201010012102
4
Quaternary
1100133332231
5
Quinary
20400240014
6
Senary
2032144445
8
Octal
120377655
10
Decimal
21102509
12
Duodecimal
7098125
16
Hexadecimal
141ffad
20
Vigesimal
6bhg59
36
Base36
ckast
md5
458f1fc867204d4bb0ebf8de1065ef3e
sha1
534612dac0af7e863fcb605279e6a66a762aab7f
sha256
7e964b042d733eb62edbf4263d57b003aea447f3d433ade93bd4bd8a1624970a
sha512
1295bef4f5bfb194d06b3c75e84430b44a089f6c9ed56bfa534322dbd2eab0b97350115cc95a632e87b9a7b6140d96e85f3118dfd5ce7f7d141b5a56a71d0faf
ripemd-160
e1b1f522fbef47dc22bc74c1cc12560a6170e8e6
Diameter
42205018
Circumference
132590974.49342
Area
1.3990011162831E+15
Volume
3.9363244863167E+22
Surface area
5.5960044651325E+15
Circumference
132590974.49342
Perimeter
84410036
Area
445315886095081
Diagonal
29843454.4279
Surface area
2671895316570486
Volume
9.3972824941644E+21
Space diagonal
36550617.75518
Perimeter
63307527
Area
1.9282743503356E+14
Altitude
18275308.87759
Surface area
1.9282743503356E+14
Volume
1.1074803627249E+21
Height
9947818.1426334