21438961 is an odd 8-digits prime number following 21438960
and preceding 21438962 . In scientific notation, it is written as 2.1438961 × 10^7.
The sum of its digits is 34. It has a total of 1 prime factors and 2 positive divisors.
There are 21438960 positive integers (up to 21438961) that are relatively prime to 21438961.
21438961 has 2 divisors, whose sum is 21438962
The reverse of 21438961 is 16983412
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 34 Digital Root 7
Name
twenty-one million four hundred thirty-eight thousand nine hundred sixty-one
Scientific notation
2.1438961 × 10^7
Engineering notation
2.1438961 × 10^6
Prime Factorization
21438961
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
21438961 Product of the distinct prime numbers
The prime factorization of 21438961 is 21438961.
Since it has a total of 1 prime factors.
10 , 8 , 53 , 85 , 490 , 444 , 454 , 874 , 32814 , 59811 , 569120 , 82058 , 3096795 , 7712935 , 96912901 , 17739328 , 822389977 , 222813624 , 4211509860 , 7764059629
n×2
42877922
n×3
64316883
n×4
85755844
n×5
107194805
n÷2
10719480.5
n÷3
7146320.3333333
n÷3
5359740.25
n÷5
4287792.2
n2
459629048759521
n3
9.8539692508225E+21
n4
2.1125886246358E+29
n5
4.5291705132611E+36
2 √n4630.222564845
3 √n277.80149468016
4 √n68.045738770661
5 √n29.257738021485
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
21438962 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
10719481 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
4630.2226728312 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999067119 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21438961 can be divided by 2 positive divisors.
The sum of these divisors (counting 21438961) is 21438962, the average is 10719481.
Base
System
Value
2
Binary
1010001110010000111110001
3
Ternary
1111100012201121
4
Quaternary
1101302013301
5
Quinary
20442021321
6
Senary
2043302241
8
Octal
121620761
10
Decimal
21438961
12
Duodecimal
721a981
16
Hexadecimal
14721f1
20
Vigesimal
6djh81
36
Base36
criep
md5
26ef1f2b25d4b8ed3ceb8b4e795097db
sha1
0474fbadb9470d1a764debc687ea9f2d58d121a6
sha256
ce6a7d44b7bbdab20b8ed367725dbdd5db1d533d5981d12be28670582d437a05
sha512
d0c3cbfeeea432418d9f7cfebcf4fa669b3848b8aaf1e1569123b83df5100987327fb7a78f1ff192f72b025d115656dbefdda766026ccc330dfda41be9bfd7e2
ripemd-160
e53643f469fdc2b8deddceefb9bbfe2de8670999
Diameter
42877922
Circumference
134704964.7564
Area
1.4439672429594E+15
Volume
4.1276209876111E+22
Surface area
5.7758689718375E+15
Circumference
134704964.7564
Perimeter
85755844
Area
459629048759521
Diagonal
30319269.409388
Surface area
2757774292557126
Volume
9.8539692508225E+21
Space diagonal
37133369.713488
Perimeter
64316883
Area
1.9902521627151E+14
Altitude
18566684.856744
Surface area
1.9902521627151E+14
Volume
1.1613014131434E+21
Height
10106423.136463