21491799 is an odd 8-digits composite number following 21491798
and preceding 21491800 . In scientific notation, it is written as 2.1491799 × 10^7.
The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors.
There are 12281016 positive integers (up to 21491799) that are relatively prime to 21491799.
21491799 has 8 divisors, whose sum is 32749440
The reverse of 21491799 is 99719412
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 42
Digital Root 6
Name
twenty-one million four hundred ninety-one thousand seven hundred ninety-nine
Scientific notation
2.1491799 × 10^7
Engineering notation
2.1491799 × 10^6
Prime Factorization
7 × 3 × 1023419
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21491799
Product of the distinct prime numbers
The prime factorization of 21491799 is 7 × 3 × 1023419.
Since it has a total of 3 prime factors.
10 , 8 , 59 , 72 , 160 , 73 , 1708 , 3462 , 41648 , 81446 , 613691 , 213531 , 2207948 , 4426441 , 44630807 , 3403736 , 895208235 , 279984446 , 1487819504 , 5157140379
n×2
42983598
n×3
64475397
n×4
85967196
n×5
107458995
n÷2
10745899.5
n÷3
7163933
n÷3
5372949.75
n÷5
4298359.8
n2
461897424256401
n3
9.9270066007363E+21
n4
2.133492305347E+29
n5
4.5852587794564E+36
2 √n
4635.924826828
3 √n
278.02952863368
4 √n
68.087626091882
5 √n
29.272145422987
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
-21491798
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 21491799 can be divided by 8 positive divisors.
The sum of these divisors (counting 21491799) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001111111000001010111
3
Ternary
1111102220012120
4
Quaternary
1101333001113
5
Quinary
21000214144
6
Senary
2044351023
8
Octal
121770127
10
Decimal
21491799
12
Duodecimal
7245473
16
Hexadecimal
147f057
20
Vigesimal
6e699j
36
Base36
csn6f
md5
dc7ec3e6c53a912dab7ecfd6a616bbce
sha1
accea3a3ae57dd712ce4b1989f8d48f240e6ae06
sha256
ef422a78f3755276672c82e5e7bb062f5e66de1e1f7a0b31037a5cc16a24edc5
sha512
0f3498ae9e526af1264f69a703642d427278bec1d35d10565df4738252d43e515dd0f0e3bca7d536685947d5238a0c180446309c8a5329bff214ba6c447a7485
ripemd-160
d7995649f9dd2b18bedaf975662a509137d935ea
Diameter
42983598
Circumference
135036955.70166
Area
1.451093554756E+15
Volume
4.1582148012014E+22
Surface area
5.8043742190238E+15
Circumference
135036955.70166
Perimeter
85967196
Area
461897424256401
Diagonal
30393993.625597
Surface area
2771384545538406
Volume
9.9270066007363E+21
Space diagonal
37224887.814058
Perimeter
64475397
Area
2.0000745167432E+14
Altitude
18612443.907029
Surface area
2.0000745167432E+14
Volume
1.1699089473774E+21
Height
10131331.208532