30991605 is an odd 8-digits composite number following 30991604
and preceding 30991606 . In scientific notation, it is written as 3.0991605 × 10^7.
The sum of its digits is 33. It has a total of 4 prime factors and 16 positive divisors.
There are 16144128 positive integers (up to 30991605) that are relatively prime to 30991605.
30991605 has 16 divisors, whose sum is 50740800
The reverse of 30991605 is 50619903
Previous prime number is 43
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6
Name
thirty million nine hundred ninety-one thousand six hundred five
Scientific notation
3.0991605 × 10^7
Engineering notation
3.0991605 × 10^6
Prime Factorization
5 × 3 × 43 × 48049
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
30991605
Product of the distinct prime numbers
The prime factorization of 30991605 is 5 × 3 × 43 × 48049.
Since it has a total of 4 prime factors.
9 , 4 , 59 , 3 , 950 , 249 , 3740 , 5392 , 78922 , 51705 , 882926 , 879395 , 1458955 , 1589003 , 91276438 , 25360596 , 328988220 , 910481788 , 2903627845 , 9418625297
n×2
61983210
n×3
92974815
n×4
123966420
n×5
154958025
n÷2
15495802.5
n÷3
10330535
n÷3
7747901.25
n÷5
6198321
n2
960479580476025
n3
2.9766803768679E+22
n4
9.225210245114E+29
n5
2.8590407195853E+37
2 √n
5567.0104185281
3 √n
314.10970580742
4 √n
74.612401238186
5 √n
31.495522216333
1 , 3 , 5 , 15 , 43 , 129 , 215 , 645 , 48049 , 144147 , 240245 , 720735 , 2066107 , 6198321 , 10330535 , 30991605
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
-30991604
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 30991605 can be divided by 16 positive divisors.
The sum of these divisors (counting 30991605) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1110110001110010011110101
3
Ternary
2011022112111020
4
Quaternary
1312032103311
5
Quinary
30413212410
6
Senary
3024131353
8
Octal
166162365
10
Decimal
30991605
12
Duodecimal
a466b59
16
Hexadecimal
1d8e4f5
20
Vigesimal
9ddj05
36
Base36
ig99x
md5
ceac40f588a36d333715e11925bf944e
sha1
3ba304360bdb4fa99c0466f3ad71d4b0b6e919d4
sha256
c1ce29d95f9bee9fb178d351eb0f2f5ecc973c7435f3b85942f194f1ce89544a
sha512
e1f1ee8f87632cbc93e5e479d7400d5ab3a1f0864fbddf24561ef23bbc02f8dee14c37d72bdd352cd8e8a2ad5dbe4938ddd3e62459d7aafa33623ef803b45de8
ripemd-160
954a0c8fed029fbe21b2d791286016ea41003c93
Diameter
61983210
Circumference
194725997.18191
Area
3.0174355939465E+15
Volume
1.2468689605404E+23
Surface area
1.2069742375786E+16
Circumference
194725997.18191
Perimeter
123966420
Area
960479580476025
Diagonal
43828748.11071
Surface area
5762877482856150
Volume
2.9766803768679E+22
Space diagonal
53679034.468106
Perimeter
92974815
Area
4.1589985825423E+14
Altitude
26839517.234053
Surface area
4.1589985825423E+14
Volume
3.5080514665137E+21
Height
14609582.70357