21039979 is an odd 8-digits composite number following 21039978
and preceding 21039980 . In scientific notation, it is written as 2.1039979 × 10^7.
The sum of its digits is 40. It has a total of 3 prime factors and 8 positive divisors.
There are 20148480 positive integers (up to 21039979) that are relatively prime to 21039979.
21039979 has 8 divisors, whose sum is 21945728
The reverse of 21039979 is 97993012
Previous prime number is 97
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 40
Digital Root 4
Name
twenty-one million thirty-nine thousand nine hundred seventy-nine
Scientific notation
2.1039979 × 10^7
Engineering notation
2.1039979 × 10^6
Prime Factorization
31 × 97 × 6997
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21039979
Product of the distinct prime numbers
The prime factorization of 21039979 is 31 × 97 × 6997.
Since it has a total of 3 prime factors.
7 , 3 , 87 , 40 , 500 , 942 , 1142 , 5457 , 95747 , 91643 , 818528 , 296567 , 9433704 , 4822372 , 37410182 , 39085400 , 85463810 , 285650960 , 3830652974 , 7946135545
n×2
42079958
n×3
63119937
n×4
84159916
n×5
105199895
n÷2
10519989.5
n÷3
7013326.3333333
n÷3
5259994.75
n÷5
4207995.8
n2
442680716320441
n3
9.313992975087E+21
n4
1.9596621660198E+29
n5
4.1231250820151E+36
2 √n
4586.9356873625
3 √n
276.06738447814
4 √n
67.726919960696
5 √n
29.148020104515
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
-21039978
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 21039979 can be divided by 8 positive divisors.
The sum of these divisors (counting 21039979) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000010000101101101011
3
Ternary
1110120221102111
4
Quaternary
1100100231223
5
Quinary
20341234404
6
Senary
2030543151
8
Octal
120205553
10
Decimal
21039979
12
Duodecimal
7067ab7
16
Hexadecimal
1410b6b
20
Vigesimal
6b9jij
36
Base36
ciyjv
md5
3528b00d6be68cb601a61c63b5b4e344
sha1
864dad05e9d7b60d5ce762270e6ff2cd0ef853f6
sha256
42973135d5b4e360a88514a11cc67734f7bf83c68cbcc93e7c59099ce8196f03
sha512
5bed069ae2fd3905faeefdbb397ef83314d73513c918711d66073223997d465940a887cd0bec529da591c96e216964ba0ac500f97df397eaeb104a6c651fc2d5
ripemd-160
34efbaf8846313469268a17be215d34faf2233b0
Diameter
42079958
Circumference
132198086.91617
Area
1.3907224862782E+15
Volume
3.9014362541494E+22
Surface area
5.5628899451127E+15
Circumference
132198086.91617
Perimeter
84159916
Area
442680716320441
Diagonal
29755023.653845
Surface area
2656084297922646
Volume
9.313992975087E+21
Space diagonal
36442312.618182
Perimeter
63119937
Area
1.916863730495E+14
Altitude
18221156.309091
Surface area
1.916863730495E+14
Volume
1.097664598768E+21
Height
9918341.2179484