21000817 is an odd 8-digits composite number following 21000816
and preceding 21000818 . In scientific notation, it is written as 2.1000817 × 10^7.
The sum of its digits is 19. It has a total of 3 prime factors and 8 positive divisors.
There are 19971600 positive integers (up to 21000817) that are relatively prime to 21000817.
21000817 has 8 divisors, whose sum is 22040640
The reverse of 21000817 is 71800012
Previous prime number is 179
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 19
Digital Root 1
Name
twenty-one million eight hundred seventeen
Scientific notation
2.1000817 × 10^7
Engineering notation
2.1000817 × 10^6
Prime Factorization
23 × 179 × 5101
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21000817
Product of the distinct prime numbers
The prime factorization of 21000817 is 23 × 179 × 5101.
Since it has a total of 3 prime factors.
10 , 4 , 73 , 46 , 343 , 194 , 2436 , 2047 , 14678 , 56898 , 319211 , 204546 , 7246934 , 5275120 , 60390486 , 57419358 , 952690657 , 144756395 , 576543711 , 5051404342
n×2
42001634
n×3
63002451
n×4
84003268
n×5
105004085
n÷2
10500408.5
n÷3
7000272.3333333
n÷3
5250204.25
n÷5
4200163.4
n2
441034314667489
n3
9.2620809330524E+21
n4
1.9451126671422E+29
n5
4.0848955167036E+36
2 √n
4582.664836097
3 √n
275.89599543465
4 √n
67.695382679301
5 √n
29.137161295334
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
-21000816
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 21000817 can be divided by 8 positive divisors.
The sum of these divisors (counting 21000817) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000000111001001110001
3
Ternary
1110111221201001
4
Quaternary
1100013021301
5
Quinary
20334011232
6
Senary
2030042001
8
Octal
120071161
10
Decimal
21000817
12
Duodecimal
7049301
16
Hexadecimal
1407271
20
Vigesimal
6b520h
36
Base36
ci4c1
md5
2164306d15993421e388c561cee9162b
sha1
0e7d7e6a62006e722c7c237876b67ffaaf148d1c
sha256
62731ab967a29fe556dafb3e62dbdac88939addae23c41ea40be99bd79d40b5c
sha512
2fc31180daadb7322ba7f0604dfdb22366f530ac4beea503981f329038fe19f75726f0af0f3eded9ca69e1dc797e6de3afe6d93ee03c133f328a816eef8f5349
ripemd-160
df94cc6cf584cbd50c81b56ba06d368607863b95
Diameter
42001634
Circumference
131952024.81317
Area
1.3855501629404E+15
Volume
3.8796913888308E+22
Surface area
5.5422006517616E+15
Circumference
131952024.81317
Perimeter
84003268
Area
441034314667489
Diagonal
29699640.222315
Surface area
2646205888004934
Volume
9.2620809330524E+21
Space diagonal
36374482.044456
Perimeter
63002451
Area
1.9097346022135E+14
Altitude
18187241.022228
Surface area
1.9097346022135E+14
Volume
1.0915467059433E+21
Height
9899880.0741052