21446721 is an odd 8-digits composite number following 21446720
and preceding 21446722 . In scientific notation, it is written as 2.1446721 × 10^7.
The sum of its digits is 27. It has a total of 3 prime factors and 8 positive divisors.
There are 14243760 positive integers (up to 21446721) that are relatively prime to 21446721.
21446721 has 8 divisors, whose sum is 22325184
The reverse of 21446721 is 12764412
Previous prime number is 293
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty-one million four hundred forty-six thousand seven hundred twenty-one
Scientific notation
2.1446721 × 10^7
Engineering notation
2.1446721 × 10^6
Prime Factorization
27 × 293 × 2711
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21446721
Product of the distinct prime numbers
The prime factorization of 21446721 is 27 × 293 × 2711.
Since it has a total of 3 prime factors.
10 , 5 , 71 , 88 , 381 , 48 , 4255 , 5020 , 79285 , 98931 , 243039 , 551318 , 8787266 , 203717 , 11622054 , 60127257 , 824884834 , 823702829 , 681210310 , 2652977555
n×2
42893442
n×3
64340163
n×4
85786884
n×5
107233605
n÷2
10723360.5
n÷3
7148907
n÷3
5361680.25
n÷5
4289344.2
n2
459961841651841
n3
9.8646732885532E+21
n4
2.1156489577575E+29
n5
4.5373732930967E+36
2 √n
4631.0604617085
3 √n
277.83500811325
4 √n
68.051895357209
5 √n
29.259855728426
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
-21446720
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 21446721 can be divided by 8 positive divisors.
The sum of these divisors (counting 21446721) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001110100000001000001
3
Ternary
1111100121101000
4
Quaternary
1101310001001
5
Quinary
20442243341
6
Senary
2043402213
8
Octal
121640101
10
Decimal
21446721
12
Duodecimal
7223369
16
Hexadecimal
1474041
20
Vigesimal
6e0gg1
36
Base36
croe9
md5
266dcc711898ebdc2de7570c00ca1806
sha1
f81d0a602aecffcb03f262e234f39d5e16023240
sha256
408cd4f23d47e22533064930c2b87db2cfcd136e0f980b3ba513038d3f30dc80
sha512
69e4ff8b973d0fb23b33b4b84b5b4ff9f62c962a1044b0f1642dacb16ce30b8ff8cc78503c2ffe5f8534a910930d2188cd73b09f7550573d8454adc619ba15ae
ripemd-160
b4043a85e9049c7c60fcc4ea0fdf6d0389650dab
Diameter
42893442
Circumference
134753722.27438
Area
1.4450127426651E+15
Volume
4.132104684451E+22
Surface area
5.7800509706602E+15
Circumference
134753722.27438
Perimeter
85786884
Area
459961841651841
Diagonal
30330243.706632
Surface area
2759771049911046
Volume
9.8646732885532E+21
Space diagonal
37146810.427754
Perimeter
64340163
Area
1.9916931982098E+14
Altitude
18573405.213877
Surface area
1.9916931982098E+14
Volume
1.1625628960876E+21
Height
10110081.235544