21931685 is an odd 8-digits composite number following 21931684
and preceding 21931686 . In scientific notation, it is written as 2.1931685 × 10^7.
The sum of its digits is 35. It has a total of 3 prime factors and 8 positive divisors.
There are 16940224 positive integers (up to 21931685) that are relatively prime to 21931685.
21931685 has 8 divisors, whose sum is 27225720
The reverse of 21931685 is 58613912
Previous prime number is 29
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 35
Digital Root 8
Name
twenty-one million nine hundred thirty-one thousand six hundred eighty-five
Scientific notation
2.1931685 × 10^7
Engineering notation
2.1931685 × 10^6
Prime Factorization
5 × 29 × 151253
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21931685
Product of the distinct prime numbers
The prime factorization of 21931685 is 5 × 29 × 151253.
Since it has a total of 3 prime factors.
7 , 3 , 37 , 18 , 303 , 818 , 1229 , 5472 , 41273 , 80045 , 563682 , 80491 , 9164855 , 9816995 , 10869882 , 72648209 , 312987898 , 377878862 , 4617845055 , 1050891395
n×2
43863370
n×3
65795055
n×4
87726740
n×5
109658425
n÷2
10965842.5
n÷3
7310561.6666667
n÷3
5482921.25
n÷5
4386337
n2
480998806939225
n3
1.0549114319167E+22
n4
2.3135985227696E+29
n5
5.0741114017848E+36
2 √n
4683.1276941805
3 √n
279.91360004288
4 √n
68.433381431729
5 √n
29.391002513957
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
-21931684
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 21931685 can be divided by 8 positive divisors.
The sum of these divisors (counting 21931685) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010011101010011010100101
3
Ternary
1112021020121122
4
Quaternary
1103222122211
5
Quinary
21103303220
6
Senary
2102023325
8
Octal
123523245
10
Decimal
21931685
12
Duodecimal
7417b45
16
Hexadecimal
14ea6a5
20
Vigesimal
6h1945
36
Base36
d22lh
md5
5a6716b58f5e7bd1ff15d7edf26525d0
sha1
2bf4f4a080fafbc1596c5baf61ac119a9ab31b05
sha256
50d48712fe158abe2c5e7e83b1aa4a078ac43bad6b349d6a3c57130d0307f1c8
sha512
56f9d810f5081b7ecc2753367b7a49df176a49588ade1678271acea47a2fc633feade3bed2dab848e99c5b8c8ce5385185307b9ebe212b0c3a2b1046d50d4058
ripemd-160
e6b32591fa79cfa3e282832431e750f758cb91a8
Diameter
43863370
Circumference
137800840.95369
Area
1.5111023182657E+15
Volume
4.4188026729298E+22
Surface area
6.0444092730629E+15
Circumference
137800840.95369
Perimeter
87726740
Area
480998806939225
Diagonal
31016086.372695
Surface area
2885992841635350
Volume
1.0549114319167E+22
Space diagonal
37986792.715596
Perimeter
65795055
Area
2.0827859299969E+14
Altitude
18993396.357798
Surface area
2.0827859299969E+14
Volume
1.2432250450992E+21
Height
10338695.457565