21031493 is an odd 8-digits composite number following 21031492
and preceding 21031494 . In scientific notation, it is written as 2.1031493 × 10^7.
The sum of its digits is 23. It has a total of 2 prime factors and 4 positive divisors.
There are 18026988 positive integers (up to 21031493) that are relatively prime to 21031493.
21031493 has 4 divisors, whose sum is 24036000
The reverse of 21031493 is 39413012
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 23
Digital Root 5
Name
twenty-one million thirty-one thousand four hundred ninety-three
Scientific notation
2.1031493 × 10^7
Engineering notation
2.1031493 × 10^6
Prime Factorization
7 × 3004499
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21031493
Product of the distinct prime numbers
The prime factorization of 21031493 is 7 × 3004499.
Since it has a total of 2 prime factors.
5 , 5 , 76 , 37 , 708 , 177 , 6039 , 518 , 65751 , 34210 , 859993 , 722476 , 7145658 , 4356113 , 62029687 , 73977071 , 400328139 , 51117197 , 9868083797 , 4807206919
n×2
42062986
n×3
63094479
n×4
84125972
n×5
105157465
n÷2
10515746.5
n÷3
7010497.6666667
n÷3
5257873.25
n÷5
4206298.6
n2
442323697809049
n3
9.3027277542051E+21
n4
1.9565025364347E+29
n5
4.1148169399509E+36
2 √n
4586.0105756529
3 √n
276.03026430715
4 √n
67.720089896964
5 √n
29.14566848607
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
-21031492
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 21031493 can be divided by 4 positive divisors.
The sum of these divisors (counting 21031493) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000001110101001000101
3
Ternary
1110120111210012
4
Quaternary
1100032221011
5
Quinary
20341001433
6
Senary
2030440005
8
Octal
120165105
10
Decimal
21031493
12
Duodecimal
7063005
16
Hexadecimal
140ea45
20
Vigesimal
6b8ied
36
Base36
cis05
md5
aca62c911c8d2ac99c68179592eab448
sha1
376c58ea4db3f9e15bcd1e74f813c419b00528c1
sha256
4115eac1195cb111d0b6de8c79c400355d7977149d8bce4fcdb9259c4b35a14c
sha512
f1e2bfcc42b863c4cd34a3de88a546118922e4a560114b34c545833ab549e1171e6a27a38dbba617971f639501b47cd9699404cc6449424beefcefd37f0d6c89
ripemd-160
7356c1925b32f6ad0b15bd85e242c0e664208903
Diameter
42062986
Circumference
132144767.80565
Area
1.3896008795456E+15
Volume
3.8967174894609E+22
Surface area
5.5584035181823E+15
Circumference
132144767.80565
Perimeter
84125972
Area
442323697809049
Diagonal
29743022.637555
Surface area
2653942186854294
Volume
9.3027277542051E+21
Space diagonal
36427614.435029
Perimeter
63094479
Area
1.9153177949925E+14
Altitude
18213807.217515
Surface area
1.9153177949925E+14
Volume
1.0963369797551E+21
Height
9914340.8791849