21304987 is an odd 8-digits composite number following 21304986
and preceding 21304988 . In scientific notation, it is written as 2.1304987 × 10^7.
The sum of its digits is 34. It has a total of 2 prime factors and 4 positive divisors.
There are 19368160 positive integers (up to 21304987) that are relatively prime to 21304987.
21304987 has 4 divisors, whose sum is 23241816
The reverse of 21304987 is 78940312
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
twenty-one million three hundred four thousand nine hundred eighty-seven
Scientific notation
2.1304987 × 10^7
Engineering notation
2.1304987 × 10^6
Prime Factorization
11 × 1936817
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21304987
Product of the distinct prime numbers
The prime factorization of 21304987 is 11 × 1936817.
Since it has a total of 2 prime factors.
8 , 8 , 22 , 61 , 774 , 639 , 6476 , 904 , 55173 , 41843 , 554525 , 77645 , 3886185 , 5341865 , 83935117 , 31509071 , 867447660 , 28041113 , 5004823238 , 5947869173
n×2
42609974
n×3
63914961
n×4
85219948
n×5
106524935
n÷2
10652493.5
n÷3
7101662.3333333
n÷3
5326246.75
n÷5
4260997.4
n2
453902471070169
n3
9.6703862454178E+21
n4
2.0602745324361E+29
n5
4.3894122129981E+36
2 √n
4615.7325529108
3 √n
277.22161623196
4 √n
67.939182751272
5 √n
29.221079424958
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
-21304986
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 21304987 can be divided by 4 positive divisors.
The sum of these divisors (counting 21304987) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010001010001011010011011
3
Ternary
1111002101221121
4
Quaternary
1101101122123
5
Quinary
20423224422
6
Senary
2040350111
8
Octal
121213233
10
Decimal
21304987
12
Duodecimal
7175337
16
Hexadecimal
145169b
20
Vigesimal
6d3297
36
Base36
con17
md5
44bc100ed38566abd3872c008c6cdfdd
sha1
e2d44ca3be00bae148f562397d6907b56453b28b
sha256
17460d61fc6e3bafd3194dc088ca1161fffec01437ac9ce6fb9183c6bc7351ff
sha512
8d36e078e561c82929ce4efe20964723013e717bae051b04ad34a1d7b8df6816920d5dd994620968fbd99edfdc995357b28985fc3dda955a2c27b7c30430b312
ripemd-160
bdb87fbdafc90e302d40ff466790ca5d85d8a5c9
Diameter
42609974
Circumference
133863181.28805
Area
1.4259766685603E+15
Volume
4.0507219181307E+22
Surface area
5.7039066742412E+15
Circumference
133863181.28805
Perimeter
85219948
Area
453902471070169
Diagonal
30129801.561582
Surface area
2723414826421014
Volume
9.6703862454178E+21
Space diagonal
36901319.938594
Perimeter
63914961
Area
1.9654553539365E+14
Altitude
18450659.969297
Surface area
1.9654553539365E+14
Volume
1.1396659484713E+21
Height
10043267.187194