20971491 is an odd 8-digits composite number following 20971490
and preceding 20971492 . In scientific notation, it is written as 2.0971491 × 10^7.
The sum of its digits is 33. It has a total of 4 prime factors and 16 positive divisors.
There are 13605408 positive integers (up to 20971491) that are relatively prime to 20971491.
20971491 has 16 divisors, whose sum is 28723200
The reverse of 20971491 is 19417902
Previous prime number is 59
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6
Name
twenty million nine hundred seventy-one thousand four hundred ninety-one
Scientific notation
2.0971491 × 10^7
Engineering notation
2.0971491 × 10^6
Prime Factorization
3 × 109 × 59 × 1087
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
20971491
Product of the distinct prime numbers
The prime factorization of 20971491 is 3 × 109 × 59 × 1087.
Since it has a total of 4 prime factors.
10 , 2 , 15 , 48 , 474 , 766 , 3143 , 79 , 53752 , 1963 , 674727 , 380914 , 5388210 , 6432493 , 66350386 , 57205859 , 967045300 , 880127191 , 8345767672 , 9231986478
n×2
41942982
n×3
62914473
n×4
83885964
n×5
104857455
n÷2
10485745.5
n÷3
6990497
n÷3
5242872.75
n÷5
4194298.2
n2
439803434763081
n3
9.223333773903E+21
n4
1.934270612294E+29
n5
4.0564538737289E+36
2 √n
4579.4640516113
3 √n
275.76751321097
4 √n
67.671737465587
5 √n
29.129019192327
1 , 3 , 59 , 109 , 177 , 327 , 1087 , 3261 , 6431 , 19293 , 64133 , 118483 , 192399 , 355449 , 6990497 , 20971491
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20971490
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20971491 can be divided by 16 positive divisors.
The sum of these divisors (counting 20971491) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001111111111111111100011
3
Ternary
1110110110110220
4
Quaternary
1033333333203
5
Quinary
20332041431
6
Senary
2025254123
8
Octal
117777743
10
Decimal
20971491
12
Duodecimal
7034343
16
Hexadecimal
13fffe3
20
Vigesimal
6b18eb
36
Base36
chhpf
md5
5d9324a8560337bf868c8a403ebb6849
sha1
82a5d9afb50f6f29792523c526eb518f6cd19fb0
sha256
dac4cd2563369455c9c583028cd8703e7a8b49852dbb5f8a635ec3e71fe9e5d1
sha512
7022472652b5048c4b7d7f14417b6b2125d380e87601bb6c5cfcfc2a6aaa1f8c3b0c920895cc381d78a03329ab12d593c4f959f959acc0900c6650457ecfc068
ripemd-160
bf3db3a8a9535b67f6175f4502290a40329b2400
Diameter
41942982
Circumference
131767764.12085
Area
1.3816832396753E+15
Volume
3.8634610167601E+22
Surface area
5.526732958701E+15
Circumference
131767764.12085
Perimeter
83885964
Area
439803434763081
Diagonal
29658166.995385
Surface area
2638820608578486
Volume
9.223333773903E+21
Space diagonal
36323687.922473
Perimeter
62914473
Area
1.9044047358824E+14
Altitude
18161843.961237
Surface area
1.9044047358824E+14
Volume
1.0869803094456E+21
Height
9886055.6651284