21356687 is an odd 8-digits composite number following 21356686
and preceding 21356688 . In scientific notation, it is written as 2.1356687 × 10^7.
The sum of its digits is 38. It has a total of 2 prime factors and 4 positive divisors.
There are 19415160 positive integers (up to 21356687) that are relatively prime to 21356687.
21356687 has 4 divisors, whose sum is 23298216
The reverse of 21356687 is 78665312
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2
Name
twenty-one million three hundred fifty-six thousand six hundred eighty-seven
Scientific notation
2.1356687 × 10^7
Engineering notation
2.1356687 × 10^6
Prime Factorization
11 × 1941517
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21356687
Product of the distinct prime numbers
The prime factorization of 21356687 is 11 × 1941517.
Since it has a total of 2 prime factors.
5 , 4 , 3 , 33 , 881 , 853 , 8237 , 3559 , 3748 , 87814 , 903427 , 127045 , 9814496 , 9621528 , 43918908 , 35514171 , 790506182 , 268568647 , 2769087487 , 137578746
n×2
42713374
n×3
64070061
n×4
85426748
n×5
106783435
n÷2
10678343.5
n÷3
7118895.6666667
n÷3
5339171.75
n÷5
4271337.4
n2
456108079615969
n3
9.7409574945293E+21
n4
2.0803458029097E+29
n5
4.4429294164506E+36
2 √n
4621.329570589
3 √n
277.44567613401
4 √n
67.980361653855
5 √n
29.235247615021
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
-21356686
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 21356687 can be divided by 4 positive divisors.
The sum of these divisors (counting 21356687) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010001011110000010001111
3
Ternary
1111012000212102
4
Quaternary
1101132002033
5
Quinary
20431403222
6
Senary
2041425315
8
Octal
121360217
10
Decimal
21356687
12
Duodecimal
719b23b
16
Hexadecimal
145e08f
20
Vigesimal
6d9be7
36
Base36
cpqxb
md5
fefad8d87ffa4687acca257311d3b92c
sha1
3097bdfe3ee788cf3000f1147314c424bd301c7b
sha256
bbdc3e9255f7d0e754dca8738393d745ff9f89294280318b96708d9b88113e52
sha512
ee73ddd56a7ce898f8583c68506b584bd1c9e77fcf8fef744a2013d623c24f6610aebd216efbd3752311ae6c77b3daaa079010fd27492a1261f2c1eaa45472ea
ripemd-160
4c27fd295569b9725ff5deba560e31adf06c523d
Diameter
42713374
Circumference
134188021.96843
Area
1.4329057921645E+15
Volume
4.0802827338325E+22
Surface area
5.7316231686579E+15
Circumference
134188021.96843
Perimeter
85426748
Area
456108079615969
Diagonal
30202916.402757
Surface area
2736648477695814
Volume
9.7409574945293E+21
Space diagonal
36990866.965346
Perimeter
64070061
Area
1.9750059190938E+14
Altitude
18495433.482673
Surface area
1.9750059190938E+14
Volume
1.1479828499386E+21
Height
10067638.800919