21291709 is an odd 8-digits composite number following 21291708
and preceding 21291710 . In scientific notation, it is written as 2.1291709 × 10^7.
The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors.
There are 21080800 positive integers (up to 21291709) that are relatively prime to 21291709.
21291709 has 4 divisors, whose sum is 21502620
The reverse of 21291709 is 90719212
Previous prime number is 101
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty-one million two hundred ninety-one thousand seven hundred nine
Scientific notation
2.1291709 × 10^7
Engineering notation
2.1291709 × 10^6
Prime Factorization
101 × 210809
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21291709
Product of the distinct prime numbers
The prime factorization of 21291709 is 101 × 210809.
Since it has a total of 2 prime factors.
7 , 5 , 27 , 34 , 310 , 768 , 3698 , 8028 , 97178 , 55003 , 439679 , 718993 , 2491754 , 9556350 , 21152739 , 86114452 , 467726646 , 227306463 , 405309100 , 6128544314
n×2
42583418
n×3
63875127
n×4
85166836
n×5
106458545
n÷2
10645854.5
n÷3
7097236.3333333
n÷3
5322927.25
n÷5
4258341.8
n2
453336872140681
n3
9.6523167605896E+21
n4
2.055143196423E+29
n5
4.3757510891568E+36
2 √n
4614.2939871664
3 √n
277.16401291772
4 √n
67.928594768083
5 √n
29.217436200447
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
-21291708
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 21291709 can be divided by 4 positive divisors.
The sum of these divisors (counting 21291709) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010001001110001010111101
3
Ternary
1111001201201211
4
Quaternary
1101032022331
5
Quinary
20422313314
6
Senary
2040204421
8
Octal
121161275
10
Decimal
21291709
12
Duodecimal
7169711
16
Hexadecimal
144e2bd
20
Vigesimal
6d1959
36
Base36
cocsd
md5
c5ac366855bdabb63040309d02accad5
sha1
bb5a97a6139f9c621dca5f473e7af7496d32a212
sha256
ecc271b0aba11a88192c8dd278780e9d5085632de0599062a943461e0c73df7a
sha512
834f02eeaab23a6705adfa9debdf257f0a77df88565f87cb9093c8b32756b78b578647f71355796688c7c0fd3c8013fef0eeb127721b3f32194159ee61f97485
ripemd-160
da8ed6a3c22649522122e53d4a3fbadcc83c59fe
Diameter
42583418
Circumference
133779753.15354
Area
1.4241997871185E+15
Volume
4.0431529900253E+22
Surface area
5.6967991484742E+15
Circumference
133779753.15354
Perimeter
85166836
Area
453336872140681
Diagonal
30111023.633901
Surface area
2720021232844086
Volume
9.6523167605896E+21
Space diagonal
36878321.767972
Perimeter
63875127
Area
1.96300623873E+14
Altitude
18439160.883986
Surface area
1.96300623873E+14
Volume
1.1375364392622E+21
Height
10037007.877967