20971387 is an odd 8-digits composite number following 20971386
and preceding 20971388 . In scientific notation, it is written as 2.0971387 × 10^7.
The sum of its digits is 37. It has a total of 2 prime factors and 4 positive divisors.
There are 19737760 positive integers (up to 20971387) that are relatively prime to 20971387.
20971387 has 4 divisors, whose sum is 22205016
The reverse of 20971387 is 78317902
Previous prime number is 17
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
twenty million nine hundred seventy-one thousand three hundred eighty-seven
Scientific notation
2.0971387 × 10^7
Engineering notation
2.0971387 × 10^6
Prime Factorization
17 × 1233611
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20971387
Product of the distinct prime numbers
The prime factorization of 20971387 is 17 × 1233611.
Since it has a total of 2 prime factors.
9 , 5 , 5 , 11 , 224 , 778 , 1583 , 8022 , 88954 , 92906 , 648304 , 632384 , 7308328 , 4251652 , 64266794 , 97027207 , 570316480 , 340234569 , 9385328131 , 5581162385
n×2
41942774
n×3
62914161
n×4
83885548
n×5
104856935
n÷2
10485693.5
n÷3
6990462.3333333
n÷3
5242846.75
n÷5
4194277.4
n2
439799072703769
n3
9.2231965559119E+21
n4
1.934232243511E+29
n5
4.0563532926546E+36
2 √n
4579.4526965567
3 √n
275.76705735611
4 √n
67.671653567477
5 √n
29.128990301449
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
-20971386
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 20971387 can be divided by 4 positive divisors.
The sum of these divisors (counting 20971387) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111111111111101111011
3
Ternary
1110110110100001
4
Quaternary
1033333331323
5
Quinary
20332041022
6
Senary
2025253431
8
Octal
117777573
10
Decimal
20971387
12
Duodecimal
7034277
16
Hexadecimal
13fff7b
20
Vigesimal
6b1897
36
Base36
chhmj
md5
628e7be8a8c66d8c9b075995eca45b77
sha1
812913fe1d225137842d01b964e290020b20539e
sha256
8e59fbe6270c75c4f1a473ae5027273ce7899b7793a1bec184bb0652cdd74a7c
sha512
2710976c3a90dd6883789f5a45daaa8f27dc0224fbef57b631d15835262c5c1f3f2fe93f01647009b8d8e245c430b5d08a898517c03cd0270055ed303eda6091
ripemd-160
23c426e7bbf60a9596ff6ebb490c89581d1c70f3
Diameter
41942774
Circumference
131767110.66958
Area
1.3816695358618E+15
Volume
3.8634035390223E+22
Surface area
5.5266781434471E+15
Circumference
131767110.66958
Perimeter
83885548
Area
439799072703769
Diagonal
29658019.917175
Surface area
2638794436222614
Volume
9.2231965559119E+21
Space diagonal
36323507.789189
Perimeter
62914161
Area
1.9043858476115E+14
Altitude
18161753.894595
Surface area
1.9043858476115E+14
Volume
1.0869641381503E+21
Height
9886006.6390583