21693989 is an odd 8-digits composite number following 21693988
and preceding 21693990 . In scientific notation, it is written as 2.1693989 × 10^7.
The sum of its digits is 47. It has a total of 2 prime factors and 4 positive divisors.
There are 20417856 positive integers (up to 21693989) that are relatively prime to 21693989.
21693989 has 4 divisors, whose sum is 22970124
The reverse of 21693989 is 98939612
Previous prime number is 17
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 47
Digital Root 2
Name
twenty-one million six hundred ninety-three thousand nine hundred eighty-nine
Scientific notation
2.1693989 × 10^7
Engineering notation
2.1693989 × 10^6
Prime Factorization
17 × 1276117
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21693989
Product of the distinct prime numbers
The prime factorization of 21693989 is 17 × 1276117.
Since it has a total of 2 prime factors.
3 , 6 , 62 , 61 , 395 , 625 , 322 , 370 , 33620 , 4201 , 280142 , 277865 , 1985415 , 7403491 , 34184611 , 60963557 , 463904307 , 996165213 , 8831714494 , 8936609292
n×2
43387978
n×3
65081967
n×4
86775956
n×5
108469945
n÷2
10846994.5
n÷3
7231329.6666667
n÷3
5423497.25
n÷5
4338797.8
n2
470629158732121
n3
1.0209823792614E+22
n4
2.214918050489E+29
n5
4.8050407823211E+36
2 √n
4657.6806459868
3 √n
278.89868839488
4 √n
68.247202477368
5 √n
29.327016472935
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
-21693988
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 21693989 can be divided by 4 positive divisors.
The sum of these divisors (counting 21693989) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010010110000011000100101
3
Ternary
1111211011120002
4
Quaternary
1102300120211
5
Quinary
21023201424
6
Senary
2052551045
8
Octal
122603045
10
Decimal
21693989
12
Duodecimal
7322485
16
Hexadecimal
14b0625
20
Vigesimal
6fbej9
36
Base36
cwz6t
md5
11f7b9d56deae83e354910fd4aea7a8e
sha1
a0097416b4e9b90fc5d9891c71c9f9bbdaeafece
sha256
c6ca388d878605cd5829cf631f5fdb84beb6b1846099fe69e1c146ceba01e88d
sha512
1152ddfae7d6bc8d07b408257b44749776d83ba73dc9d753c68d2e18bc41dec2a54fa02e7707c649b2a11f1a5bed8a8d4dc1fc60ee410e95cec7aabb7aff646e
ripemd-160
6c2ba59f9de3cfb19f8b912a60be6dc8547c4608
Diameter
43387978
Circumference
136307352.93892
Area
1.478525107638E+15
Volume
4.2766809895096E+22
Surface area
5.9141004305519E+15
Circumference
136307352.93892
Perimeter
86775956
Area
470629158732121
Diagonal
30679933.465773
Surface area
2823774952392726
Volume
1.0209823792614E+22
Space diagonal
37575091.16684
Perimeter
65081967
Area
2.0378840361186E+14
Altitude
18787545.58342
Surface area
2.0378840361186E+14
Volume
1.2032392730795E+21
Height
10226644.488591