30906821 is an odd 8-digits composite number following 30906820
and preceding 30906822 . In scientific notation, it is written as 3.0906821 × 10^7.
The sum of its digits is 29. It has a total of 2 prime factors and 4 positive divisors.
There are 28097100 positive integers (up to 30906821) that are relatively prime to 30906821.
30906821 has 4 divisors, whose sum is 33716544
The reverse of 30906821 is 12860903
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2
Name
thirty million nine hundred six thousand eight hundred twenty-one
Scientific notation
3.0906821 × 10^7
Engineering notation
3.0906821 × 10^6
Prime Factorization
11 × 2809711
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
30906821
Product of the distinct prime numbers
The prime factorization of 30906821 is 11 × 2809711.
Since it has a total of 2 prime factors.
5 , 1 , 47 , 92 , 480 , 38 , 598 , 1293 , 90873 , 64027 , 454531 , 25186 , 6701376 , 2592187 , 59976170 , 38310998 , 170743977 , 391815933 , 7021893681 , 8423627431
n×2
61813642
n×3
92720463
n×4
123627284
n×5
154534105
n÷2
15453410.5
n÷3
10302273.666667
n÷3
7726705.25
n÷5
6181364.2
n2
955231584326041
n3
2.9523171590311E+22
n4
9.1246737969404E+29
n5
2.8201465972543E+37
2 √n
5559.3903442734
3 √n
313.82300666643
4 √n
74.561319357113
5 √n
31.478270813935
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-30906820
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 30906821 can be divided by 4 positive divisors.
The sum of these divisors (counting 30906821) is 1, the average is 0.25.
Base
System
Value
2
Binary
1110101111001100111000101
3
Ternary
2011011020012002
4
Quaternary
1311321213011
5
Quinary
30403004241
6
Senary
3022235045
8
Octal
165714705
10
Decimal
30906821
12
Duodecimal
a425a85
16
Hexadecimal
1d799c5
20
Vigesimal
9d3711
36
Base36
iefut
md5
4e73371ac61d6fab355e9f7a142cfe8c
sha1
3eb07043679aece07084111b3c7deb33e8c34326
sha256
44f0cb1b3b3187c7dd1812572a8638a3a7c3f1fe56e53040b18accc8c8d0a12d
sha512
a4db5930d94856a0580bfdfb02af414562d39c92c7d9176d6a8beb8311b72f90806e79e46b8fba5b14683a2737538802e9a4c7e078483965842189ff9bb54785
ripemd-160
db7b13430b4a20b256de5a43b3edcc76e36bb7c2
Diameter
61813642
Circumference
194193283.59883
Area
3.0009485277956E+15
Volume
1.2366637197172E+23
Surface area
1.2003794111183E+16
Circumference
194193283.59883
Perimeter
123627284
Area
955231584326041
Diagonal
43708845.428038
Surface area
5731389505956246
Volume
2.9523171590311E+22
Space diagonal
53532184.272437
Perimeter
92720463
Area
4.136274092618E+14
Altitude
26766092.136218
Surface area
4.136274092618E+14
Volume
3.4793391389405E+21
Height
14569615.142679