21931187 is an odd 8-digits composite number following 21931186
and preceding 21931188 . In scientific notation, it is written as 2.1931187 × 10^7.
The sum of its digits is 32. It has a total of 4 prime factors and 16 positive divisors.
There are 19805760 positive integers (up to 21931187) that are relatively prime to 21931187.
21931187 has 16 divisors, whose sum is 24192000
The reverse of 21931187 is 78113912
Previous prime number is 47
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5
Name
twenty-one million nine hundred thirty-one thousand one hundred eighty-seven
Scientific notation
2.1931187 × 10^7
Engineering notation
2.1931187 × 10^6
Prime Factorization
19 × 41 × 47 × 599
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
21931187
Product of the distinct prime numbers
The prime factorization of 21931187 is 19 × 41 × 47 × 599.
Since it has a total of 4 prime factors.
9 , 9 , 27 , 61 , 591 , 438 , 5185 , 6166 , 82771 , 66230 , 173988 , 141141 , 8794371 , 9075056 , 74431593 , 96115794 , 459929030 , 708888887 , 109177799 , 276413253
n×2
43862374
n×3
65793561
n×4
87724748
n×5
109655935
n÷2
10965593.5
n÷3
7310395.6666667
n÷3
5482796.75
n÷5
4386237.4
n2
480976963228969
n3
1.0548395723267E+22
n4
2.3133883915696E+29
n5
5.0735353419142E+36
2 √n
4683.0745242842
3 √n
279.91148137259
4 √n
68.432992951384
5 √n
29.390869037189
1 , 19 , 41 , 47 , 599 , 779 , 893 , 1927 , 11381 , 24559 , 28153 , 36613 , 466621 , 534907 , 1154273 , 21931187
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21931186
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21931187 can be divided by 16 positive divisors.
The sum of these divisors (counting 21931187) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1010011101010010010110011
3
Ternary
1112021012221012
4
Quaternary
1103222102303
5
Quinary
21103244222
6
Senary
2102021135
8
Octal
123522263
10
Decimal
21931187
12
Duodecimal
74177ab
16
Hexadecimal
14ea4b3
20
Vigesimal
6h17j7
36
Base36
d227n
md5
d3e1f246a60c0a55c2ec3cf7465f04ec
sha1
ad9f61c77883143dc5b6d529231ce209c0879456
sha256
2950e0c8f3a9a28c73f168d7500b87d734033ba94ea66d570a80e6f937c23f3b
sha512
02df45d6e7441a5eb9e1f65fe26789ee0a27e08304bde99d41a0f063599763848c21d2e432a941c0e2fc497de05c304ec3b911d171a7be8861332fa20c5a60d2
ripemd-160
c0140d6f1911729a067cca9dd9135f80ffd6c3fd
Diameter
43862374
Circumference
137797711.92741
Area
1.5110336942261E+15
Volume
4.418501668183E+22
Surface area
6.0441347769042E+15
Circumference
137797711.92741
Perimeter
87724748
Area
480976963228969
Diagonal
31015382.094341
Surface area
2885861779373814
Volume
1.0548395723267E+22
Space diagonal
37985930.154294
Perimeter
65793561
Area
2.0826913439569E+14
Altitude
18992965.077147
Surface area
2.0826913439569E+14
Volume
1.2431403577602E+21
Height
10338460.698114