21493771 is an odd 8-digits composite number following 21493770
and preceding 21493772 . In scientific notation, it is written as 2.1493771 × 10^7.
The sum of its digits is 34. It has a total of 3 prime factors and 8 positive divisors.
There are 19712160 positive integers (up to 21493771) that are relatively prime to 21493771.
21493771 has 8 divisors, whose sum is 23296784
The reverse of 21493771 is 17739412
Previous prime number is 157
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
twenty-one million four hundred ninety-three thousand seven hundred seventy-one
Scientific notation
2.1493771 × 10^7
Engineering notation
2.1493771 × 10^6
Prime Factorization
13 × 157 × 10531
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21493771
Product of the distinct prime numbers
The prime factorization of 21493771 is 13 × 157 × 10531.
Since it has a total of 3 prime factors.
9 , 2 , 35 , 23 , 823 , 712 , 3609 , 5704 , 57484 , 59069 , 530526 , 888466 , 9133488 , 2993724 , 88798849 , 48391814 , 463240256 , 520319253 , 885674393 , 9407990027
n×2
42987542
n×3
64481313
n×4
85975084
n×5
107468855
n÷2
10746885.5
n÷3
7164590.3333333
n÷3
5373442.75
n÷5
4298754.2
n2
461982191800441
n3
9.9297394366368E+21
n4
2.1342754554074E+29
n5
4.5873627889447E+36
2 √n
4636.1375087458
3 √n
278.03803199291
4 √n
68.089187899004
5 √n
29.272682581856
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
-21493770
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 21493771 can be divided by 8 positive divisors.
The sum of these divisors (counting 21493771) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001111111100000001011
3
Ternary
1111102222220121
4
Quaternary
1101333200023
5
Quinary
21000300041
6
Senary
2044404111
8
Octal
121774013
10
Decimal
21493771
12
Duodecimal
7246637
16
Hexadecimal
147f80b
20
Vigesimal
6e6e8b
36
Base36
csop7
md5
1705023904be12a8fe717c9e871c2d05
sha1
4696a99e6b0fd6d7380728d2a6f1c5be013ff973
sha256
3f86e394f2c9b915b70212936bbba10e490161f8f3a5b6c30e87d5613b6ea517
sha512
4fb38f5d067ca05185a7c5ee3b077d77972d6ebcac13b3cbc10437393c266c621c83ed0fc43657c61f959c1dad32a708f4ba2b6dcac8d6080829ac2d1fcf0e62
ripemd-160
8ea4bf3b6dfcc4d02dbe84684bc6a30ef1c4289e
Diameter
42987542
Circumference
135049346.14308
Area
1.4513598598496E+15
Volume
4.1593595288265E+22
Surface area
5.8054394393983E+15
Circumference
135049346.14308
Perimeter
85975084
Area
461982191800441
Diagonal
30396782.454742
Surface area
2771893150802646
Volume
9.9297394366368E+21
Space diagonal
37228303.418251
Perimeter
64481313
Area
2.000441570976E+14
Altitude
18614151.709125
Surface area
2.000441570976E+14
Volume
1.1702310151769E+21
Height
10132260.818247