21293487 is an odd 8-digits composite number following 21293486
and preceding 21293488 . In scientific notation, it is written as 2.1293487 × 10^7.
The sum of its digits is 36. It has a total of 3 prime factors and 8 positive divisors.
There are 14127120 positive integers (up to 21293487) that are relatively prime to 21293487.
21293487 has 8 divisors, whose sum is 23773680
The reverse of 21293487 is 78439212
Previous prime number is 211
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9
Name
twenty-one million two hundred ninety-three thousand four hundred eighty-seven
Scientific notation
2.1293487 × 10^7
Engineering notation
2.1293487 × 10^6
Prime Factorization
9 × 211 × 11213
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21293487
Product of the distinct prime numbers
The prime factorization of 21293487 is 9 × 211 × 11213.
Since it has a total of 3 prime factors.
1 , 3 , 26 , 7 , 685 , 766 , 4479 , 435 , 36034 , 61013 , 75941 , 898355 , 9263284 , 6079267 , 4712646 , 88872222 , 579575719 , 664751355 , 434074616 , 1223229543
n×2
42586974
n×3
63880461
n×4
85173948
n×5
106467435
n÷2
10646743.5
n÷3
7097829
n÷3
5323371.75
n÷5
4258697.4
n2
453412588619169
n3
9.6547350613986E+21
n4
2.0558297551834E+29
n5
4.377578416621E+36
2 √n
4614.4866453377
3 √n
277.17172771879
4 √n
67.930012846589
5 √n
29.217924154387
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21293486
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21293487 can be divided by 8 positive divisors.
The sum of these divisors (counting 21293487) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001001110100110101111
3
Ternary
1111001211011200
4
Quaternary
1101032212233
5
Quinary
20422342422
6
Senary
2040220543
8
Octal
121164657
10
Decimal
21293487
12
Duodecimal
716a753
16
Hexadecimal
144e9af
20
Vigesimal
6d1de7
36
Base36
coe5r
md5
f5b505204f7bbc0462b06f12dc0bfaf1
sha1
690b2eb7ecc906521a1850beebf44121bbd3918e
sha256
316f860a7538a137694b0ff4a8d5ae9e4b8f438cfbddea3a301a4aa0860ebfdd
sha512
7ffbaae07689494c8dbb4f58020e3ced16dcf8d8c4ff9559daccae188a43b6f9115ff2c066e6ae810ff150b8b8da461fb8e190f0ea3b649a1b651d85935e4c7f
ripemd-160
4d1d7b9bb33ae48fc44337b9968abe30fb8467d4
Diameter
42586974
Circumference
133790924.65702
Area
1.4244376574511E+15
Volume
4.0441659654994E+22
Surface area
5.6977506298044E+15
Circumference
133790924.65702
Perimeter
85173948
Area
453412588619169
Diagonal
30113538.105615
Surface area
2720475531715014
Volume
9.6547350613986E+21
Space diagonal
36881401.354307
Perimeter
63880461
Area
1.9633341006993E+14
Altitude
18440700.677154
Surface area
1.9633341006993E+14
Volume
1.1378214387457E+21
Height
10037846.035205