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 4 prime factors and 16 positive divisors.
There are 14243760 positive integers (up to 21446721) that are relatively prime to 21446721.
21446721 has 16 divisors, whose sum is 31893120
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
3 × 9 × 293 × 2711
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
21446721
Product of the distinct prime numbers
The prime factorization of 21446721 is 3 × 9 × 293 × 2711.
Since it has a total of 4 prime factors.
10 , 6 , 17 , 38 , 576 , 505 , 995 , 6320 , 22167 , 19958 , 562973 , 234342 , 3256535 , 8147331 , 2088833 , 76063332 , 317722095 , 583811780 , 2638563030 , 8886161425
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
1 , 3 , 9 , 27 , 293 , 879 , 2637 , 2711 , 7911 , 8133 , 24399 , 73197 , 794323 , 2382969 , 7148907 , 21446721
16 divisors
τ
Total Divisors
16
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
0.0625
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
16
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 16 positive divisors.
The sum of these divisors (counting 21446721) is 1, the average is 0.0625.
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