20681749 is an odd 8-digits composite number following 20681748
and preceding 20681750 . In scientific notation, it is written as 2.0681749 × 10^7.
The sum of its digits is 37. It has a total of 2 prime factors and 4 positive divisors.
There are 18801580 positive integers (up to 20681749) that are relatively prime to 20681749.
20681749 has 4 divisors, whose sum is 22561920
The reverse of 20681749 is 94718602
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
twenty million six hundred eighty-one thousand seven hundred forty-nine
Scientific notation
2.0681749 × 10^7
Engineering notation
2.0681749 × 10^6
Prime Factorization
11 × 1880159
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20681749
Product of the distinct prime numbers
The prime factorization of 20681749 is 11 × 1880159.
Since it has a total of 2 prime factors.
8 , 1 , 87 , 96 , 368 , 9 , 7999 , 5130 , 8863 , 78628 , 322754 , 680983 , 1311184 , 1892362 , 51354216 , 25748473 , 863498178 , 866854560 , 1886282872 , 9467840732
n×2
41363498
n×3
62045247
n×4
82726996
n×5
103408745
n÷2
10340874.5
n÷3
6893916.3333333
n÷3
5170437.25
n÷5
4136349.8
n2
427734741699001
n3
8.8463025663986E+21
n4
1.8295700925631E+29
n5
3.7838709432297E+36
2 √n
4547.7190986252
3 √n
274.49161832972
4 √n
67.436778530896
5 √n
29.04808138062
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
-20681748
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 20681749 can be divided by 4 positive divisors.
The sum of these divisors (counting 20681749) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001110111001010000010101
3
Ternary
1102220202000201
4
Quaternary
1032321100111
5
Quinary
20243303444
6
Senary
2015140501
8
Octal
116712025
10
Decimal
20681749
12
Duodecimal
6b14731
16
Hexadecimal
13b9415
20
Vigesimal
695479
36
Base36
cba51
md5
e89af2a617f92c8af59808a086a12c15
sha1
081ea164ad2863fa15037bf1f1a85abe0be100c5
sha256
f2ddc73d4384bc3b92eef511b5e832f16b292b173d14f81697f3859c37b35af8
sha512
a017be53047729c42467e3752c14b4d685106c70b2728e31ab45b20c629ce2deede33fe33d3185d8deedc7ccb9a691a4611447a03f3fef4c1bc7760dafbc35e1
ripemd-160
c1f56862ef0a86d914e9d84d5bb98d8d0b31d3f1
Diameter
41363498
Circumference
129947261.44358
Area
1.3437683222067E+15
Volume
3.7055305538707E+22
Surface area
5.3750732888268E+15
Circumference
129947261.44358
Perimeter
82726996
Area
427734741699001
Diagonal
29248409.929396
Surface area
2566408450194006
Volume
8.8463025663986E+21
Space diagonal
35821840.057387
Perimeter
62045247
Area
1.8521457619625E+14
Altitude
17910920.028693
Surface area
1.8521457619625E+14
Volume
1.0425467555214E+21
Height
9749469.9764654