21690789 is an odd 8-digits composite number following 21690788
and preceding 21690790 . In scientific notation, it is written as 2.1690789 × 10^7.
The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors.
There are 14447520 positive integers (up to 21690789) that are relatively prime to 21690789.
21690789 has 8 divisors, whose sum is 28947072
The reverse of 21690789 is 98709612
Previous prime number is 1423
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 42
Digital Root 6
Name
twenty-one million six hundred ninety thousand seven hundred eighty-nine
Scientific notation
2.1690789 × 10^7
Engineering notation
2.1690789 × 10^6
Prime Factorization
3 × 1423 × 5081
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21690789
Product of the distinct prime numbers
The prime factorization of 21690789 is 3 × 1423 × 5081.
Since it has a total of 3 prime factors.
9 , 5 , 64 , 38 , 560 , 507 , 4902 , 2704 , 46790 , 87398 , 970284 , 258893 , 2519088 , 3309686 , 84814549 , 88327151 , 403123618 , 453693108 , 1408899840 , 9917786776
n×2
43381578
n×3
65072367
n×4
86763156
n×5
108453945
n÷2
10845394.5
n÷3
7230263
n÷3
5422697.25
n÷5
4338157.8
n2
470490327442521
n3
1.0205306419097E+22
n4
2.2136114821697E+29
n5
4.801497958772E+36
2 √n
4657.3371147041
3 √n
278.88497461625
4 √n
68.244685615102
5 √n
29.326151237958
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
-21690788
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 21690789 can be divided by 8 positive divisors.
The sum of these divisors (counting 21690789) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010101111100110100101
3
Ternary
1111211000011120
4
Quaternary
1102233212211
5
Quinary
21023101124
6
Senary
2052524153
8
Octal
122574645
10
Decimal
21690789
12
Duodecimal
7320659
16
Hexadecimal
14af9a5
20
Vigesimal
6fb6j9
36
Base36
cwwpx
md5
dff2cfdeb9134b100b3f9c177a96bacd
sha1
e030a4d0677cd9c7b32dc4b195f4ce2aaaab57b2
sha256
e51844405d8023cd4fd8a783b88aeb02eccd868721576e498fb415a622e54b13
sha512
e90b701a38949ba8bff3a991ab915d22d9e7e1f025385ed97295e5a56f7625d4a256c15f7d515c856f84ce7bb01fdd3ed14f3d4086181b0f4e1a128874cfa8d9
ripemd-160
2fa682b3e0bd101aadbecc3ba49e7a63bd80a016
Diameter
43381578
Circumference
136287246.74593
Area
1.4780889562785E+15
Volume
4.2747887565156E+22
Surface area
5.9123558251139E+15
Circumference
136287246.74593
Perimeter
86763156
Area
470490327442521
Diagonal
30675407.982373
Surface area
2822941964655126
Volume
1.0205306419097E+22
Space diagonal
37569548.604256
Perimeter
65072367
Area
2.0372828790004E+14
Altitude
18784774.302128
Surface area
2.0372828790004E+14
Volume
1.202706895505E+21
Height
10225135.994124