21102989 is an odd 8-digits composite number following 21102988
and preceding 21102990 . In scientific notation, it is written as 2.1102989 × 10^7.
The sum of its digits is 32. It has a total of 2 prime factors and 4 positive divisors.
There are 21082656 positive integers (up to 21102989) that are relatively prime to 21102989.
21102989 has 4 divisors, whose sum is 21123324
The reverse of 21102989 is 98920112
Previous prime number is 1097
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5
Name
twenty-one million one hundred two thousand nine hundred eighty-nine
Scientific notation
2.1102989 × 10^7
Engineering notation
2.1102989 × 10^6
Prime Factorization
1097 × 19237
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21102989
Product of the distinct prime numbers
The prime factorization of 21102989 is 1097 × 19237.
Since it has a total of 2 prime factors.
4 , 9 , 35 , 70 , 972 , 511 , 5284 , 618 , 87672 , 10902 , 491565 , 827826 , 6879230 , 7578516 , 73360251 , 35255683 , 227815370 , 104855928 , 5836302240 , 2211637364
n×2
42205978
n×3
63308967
n×4
84411956
n×5
105514945
n÷2
10551494.5
n÷3
7034329.6666667
n÷3
5275747.25
n÷5
4220597.8
n2
445336144734121
n3
9.3979237636266E+21
n4
1.9832428180665E+29
n5
4.1852351373986E+36
2 √n
4593.7989725281
3 √n
276.3426963819
4 √n
67.777569833449
5 √n
29.165457580002
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
-21102988
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 21102989 can be divided by 4 positive divisors.
The sum of these divisors (counting 21102989) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000100000000110001101
3
Ternary
1110201010212012
4
Quaternary
1100200012031
5
Quinary
20400243424
6
Senary
2032151005
8
Octal
120400615
10
Decimal
21102989
12
Duodecimal
7098465
16
Hexadecimal
142018d
20
Vigesimal
6bhh99
36
Base36
ckb65
md5
e560743281bd2d400ff14b88abd43070
sha1
304039fd7fe8bc975db194f4fd8c482d43d5c161
sha256
170a5fc83dc08ea19718a298aef9c5d86d5d96ad393eaf26de1353b6ef2547e7
sha512
d107e4ff22f1bd451345317f3cf973f2f6a95d2ab3dccc293a792e035069c9b69a27342b487170fd9f43116b719282dcf300640ea7b56638c8929ffbce08a917
ripemd-160
d0ab690a2b0dfebb9e8de80232f1e223ef596991
Diameter
42205978
Circumference
132593990.42237
Area
1.3990647606747E+15
Volume
3.9365931006408E+22
Surface area
5.5962590426989E+15
Circumference
132593990.42237
Perimeter
84411956
Area
445336144734121
Diagonal
29844133.25041
Surface area
2672016868404726
Volume
9.3979237636266E+21
Space diagonal
36551449.139567
Perimeter
63308967
Area
1.9283620728159E+14
Altitude
18275724.569784
Surface area
1.9283620728159E+14
Volume
1.1075559370558E+21
Height
9948044.4168034