20856591 is an odd 8-digits composite number following 20856590
and preceding 20856592 . In scientific notation, it is written as 2.0856591 × 10^7.
The sum of its digits is 36. It has a total of 4 prime factors and 16 positive divisors.
There are 11639376 positive integers (up to 20856591) that are relatively prime to 20856591.
20856591 has 16 divisors, whose sum is 29814400
The reverse of 20856591 is 19565802
Previous prime number is 43
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9
Name
twenty million eight hundred fifty-six thousand five hundred ninety-one
Scientific notation
2.0856591 × 10^7
Engineering notation
2.0856591 × 10^6
Prime Factorization
21 × 3 × 43 × 7699
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
20856591
Product of the distinct prime numbers
The prime factorization of 20856591 is 21 × 3 × 43 × 7699.
Since it has a total of 4 prime factors.
4 , 7 , 74 , 24 , 835 , 434 , 9578 , 7186 , 98913 , 49093 , 485876 , 729352 , 9148628 , 6530465 , 52533369 , 31984241 , 222191462 , 537389971 , 6934217066 , 8845992604
n×2
41713182
n×3
62569773
n×4
83426364
n×5
104282955
n÷2
10428295.5
n÷3
6952197
n÷3
5214147.75
n÷5
4171318.2
n2
434997388141281
n3
9.0725626105309E+21
n4
1.8922272768974E+29
n5
3.9465410393292E+36
2 √n
4566.9016849501
3 √n
275.26295949297
4 √n
67.578855309557
5 √n
29.097030208321
1 , 3 , 21 , 43 , 63 , 129 , 903 , 2709 , 7699 , 23097 , 161679 , 331057 , 485037 , 993171 , 6952197 , 20856591
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
-20856590
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 20856591 can be divided by 16 positive divisors.
The sum of these divisors (counting 20856591) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001111100011111100001111
3
Ternary
1110020121212100
4
Quaternary
1033203330033
5
Quinary
20314402331
6
Senary
2023010143
8
Octal
117437417
10
Decimal
20856591
12
Duodecimal
6b99953
16
Hexadecimal
13e3f0f
20
Vigesimal
6a719b
36
Base36
cf11r
md5
db8a5e25e5e1a4fdfb18e09b2347f620
sha1
4f680f4f5010c76832486cd85abf547c0a53c1ce
sha256
eaaa83b87aef064d5f85014571f27dbbb1c1095151027e5bf834020ba9dbfad6
sha512
5c4d6500cebf20579acff78707d413cf14f49c8d057e4b0a482096eafba593376e04c4e7d73447e92636b7d5aa5e407c8359f9b6aa48eb48630085fdc971f7a6
ripemd-160
5f0c9f8bf7eb4ba98757064541b3be4cf7b7b78e
Diameter
41713182
Circumference
131045826.12905
Area
1.3665845989154E+15
Volume
3.8003061395303E+22
Surface area
5.4663383956616E+15
Circumference
131045826.12905
Perimeter
83426364
Area
434997388141281
Diagonal
29495673.857069
Surface area
2609984328847686
Volume
9.0725626105309E+21
Space diagonal
36124675.284684
Perimeter
62569773
Area
1.8835939435511E+14
Altitude
18062337.642342
Surface area
1.8835939435511E+14
Volume
1.069211757441E+21
Height
9831891.2856895