21781137 is an odd 8-digits composite number following 21781136
and preceding 21781138 . In scientific notation, it is written as 2.1781137 × 10^7.
The sum of its digits is 30. It has a total of 4 prime factors and 12 positive divisors.
There are 12446280 positive integers (up to 21781137) that are relatively prime to 21781137.
21781137 has 12 divisors, whose sum is 33783216
The reverse of 21781137 is 73118712
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
twenty-one million seven hundred eighty-one thousand one hundred thirty-seven
Scientific notation
2.1781137 × 10^7
Engineering notation
2.1781137 × 10^6
Prime Factorization
3 × 7 × 7 × 148171
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
3111591
Product of the distinct prime numbers
The prime factorization of 21781137 is 3 × 7 × 7 × 148171.
Since it has a total of 4 prime factors.
4 , 1 , 4 , 20 , 163 , 205 , 1158 , 1405 , 34351 , 24742 , 400752 , 440037 , 5217261 , 4388012 , 51068165 , 71509996 , 188801397 , 588571467 , 1671856602 , 2142727163
n×2
43562274
n×3
65343411
n×4
87124548
n×5
108905685
n÷2
10890568.5
n÷3
7260379
n÷3
5445284.25
n÷5
4356227.4
n2
474417929012769
n3
1.0333361907083E+22
n4
2.2507237136876E+29
n5
4.9023321556979E+36
2 √n
4667.0265694551
3 √n
279.27164868218
4 √n
68.315639274291
5 √n
29.350540905484
1 , 3 , 7 , 21 , 49 , 147 , 148171 , 444513 , 1037197 , 3111591 , 7260379 , 21781137
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21781136
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21781137 can be divided by 12 positive divisors.
The sum of these divisors (counting 21781137) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1010011000101101010010001
3
Ternary
1111222121002210
4
Quaternary
1103011222101
5
Quinary
21033444022
6
Senary
2054502333
8
Octal
123055221
10
Decimal
21781137
12
Duodecimal
73649a9
16
Hexadecimal
14c5a91
20
Vigesimal
6g2cgh
36
Base36
cyufl
md5
4c3e8578658469147c98c67903eb8db7
sha1
7bc265c832d5dbff966982cd8c31dd3531a31224
sha256
895dad6898585b297c9f79612fc79645ac2ee1e2ae738eff71384fa1ed51dac9
sha512
0fdd27d439d591047c6ab9064fae4ae3a8fd1a7e80bcbb500b0c75732aac338613fe8a06bed18627818399397482d491a703c5c1d66702f3323b7a5c108ebca8
ripemd-160
22bb257cadcbbd822f5ddbb0af6c359358277828
Diameter
43562274
Circumference
136854919.97207
Area
1.4904278805178E+15
Volume
4.3284285138904E+22
Surface area
5.9617115220712E+15
Circumference
136854919.97207
Perimeter
87124548
Area
474417929012769
Diagonal
30803179.349306
Surface area
2846507574076614
Volume
1.0333361907083E+22
Space diagonal
37726035.930618
Perimeter
65343411
Area
2.0542898926793E+14
Altitude
18863017.965309
Surface area
2.0542898926793E+14
Volume
1.2177983794922E+21
Height
10267726.449769