21603985 is an odd 8-digits composite number following 21603984
and preceding 21603986 . In scientific notation, it is written as 2.1603985 × 10^7.
The sum of its digits is 34. It has a total of 3 prime factors and 8 positive divisors.
There are 15095808 positive integers (up to 21603985) that are relatively prime to 21603985.
21603985 has 8 divisors, whose sum is 22051112
The reverse of 21603985 is 58930612
Previous prime number is 157
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
twenty-one million six hundred three thousand nine hundred eighty-five
Scientific notation
2.1603985 × 10^7
Engineering notation
2.1603985 × 10^6
Prime Factorization
1885 × 157 × 73
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21603985
Product of the distinct prime numbers
The prime factorization of 21603985 is 1885 × 157 × 73.
Since it has a total of 3 prime factors.
1 , 10 , 98 , 21 , 440 , 343 , 1267 , 2110 , 77081 , 3936 , 815777 , 689143 , 6645117 , 5949425 , 75577743 , 69648159 , 440598556 , 646987532 , 6916716605 , 9239155439
n×2
43207970
n×3
64811955
n×4
86415940
n×5
108019925
n÷2
10801992.5
n÷3
7201328.3333333
n÷3
5400996.25
n÷5
4320797
n2
466732167880225
n3
1.0083274753902E+22
n4
2.1783891653417E+29
n5
4.7061886852206E+36
2 √n
4648.008713417
3 √n
278.51245556688
4 √n
68.176306099824
5 √n
29.302641609378
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
-21603984
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 21603985 can be divided by 8 positive divisors.
The sum of these divisors (counting 21603985) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010011010011010010001
3
Ternary
1111122121002121
4
Quaternary
1102122122101
5
Quinary
21012311420
6
Senary
2051014241
8
Octal
122323221
10
Decimal
21603985
12
Duodecimal
729a381
16
Hexadecimal
149a691
20
Vigesimal
6f09j5
36
Base36
cv1qp
md5
aa7bc51916252de0649d95f49407d058
sha1
09e33101ce9aceb3dfbb7de46b46c7cebf22a7f5
sha256
74cdb6fc2c31da039fba394f30edd6f9efb413b79590a2d8b56378dad3e9819e
sha512
8d46ea5168fffdfb38cdb29c5adc78eb0abdcab79eeb5d43028e41423343bf9bad1f6b5c29d26683bfaadb824fa4c10d90bba4e03d21bc73cb189d66a849f881
ripemd-160
b9685f7286dc195d1e7fc69eb4b195acba7b34c2
Diameter
43207970
Circumference
135741841.12853
Area
1.4662823498066E+15
Volume
4.2236722521314E+22
Surface area
5.8651293992262E+15
Circumference
135741841.12853
Perimeter
86415940
Area
466732167880225
Diagonal
30552648.588305
Surface area
2800393007281350
Volume
1.0083274753902E+22
Space diagonal
37419199.665956
Perimeter
64811955
Area
2.0210095707383E+14
Altitude
18709599.832978
Surface area
2.0210095707383E+14
Volume
1.1883253258419E+21
Height
10184216.196102