16491981 is an odd 8-digits composite number following 16491980
and preceding 16491982 . In scientific notation, it is written as 1.6491981 × 10^7.
The sum of its digits is 39. It has a total of 5 prime factors and 32 positive divisors.
There are 9132480 positive integers (up to 16491981) that are relatively prime to 16491981.
16491981 has 32 divisors, whose sum is 26150400
The reverse of 16491981 is 18919461
Previous prime number is 29
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3
Name
sixteen million four hundred ninety-one thousand nine hundred eighty-one
Scientific notation
1.6491981 × 10^7
Engineering notation
1.6491981 × 10^6
Prime Factorization
3 × 19 × 11 × 29 × 907
Composite number
ω
Distinct Factors
5
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
16491981
Product of the distinct prime numbers
The prime factorization of 16491981 is 3 × 19 × 11 × 29 × 907.
Since it has a total of 5 prime factors.
3 , 6 , 18 , 90 , 619 , 664 , 7864 , 8828 , 17278 , 2074 , 792359 , 338982 , 2009994 , 583948 , 17774293 , 92092336 , 951027401 , 442902226 , 5832197299 , 434880468
n×2
32983962
n×3
49475943
n×4
65967924
n×5
82459905
n÷2
8245990.5
n÷3
5497327
n÷3
4122995.25
n÷5
3298396.2
n2
271985437304361
n3
4.4855786643002E+21
n4
7.3976078105644E+28
n5
1.2200120745728E+36
2 √n
4061.0320116936
3 √n
254.54091948862
4 √n
63.726227031683
5 √n
27.762243890074
1 , 3 , 11 , 19 , 29 , 33 , 57 , 87 , 209 , 319 , 551 , 627 , 907 , 957 , 1653 , 2721 , 6061 , 9977 , 17233 , 18183 , 26303 , 29931 , 51699 , 78909 , 189563 , 289333 , 499757 , 568689 , 867999 , 1499271 , 5497327 , 16491981
32 divisors
τ
Total Divisors
32
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-16491980
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.03125
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
32
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 16491981 can be divided by 32 positive divisors.
The sum of these divisors (counting 16491981) is 1, the average is 0.03125.
Base
System
Value
2
Binary
111110111010010111001101
3
Ternary
1011000212202010
4
Quaternary
332322113031
5
Quinary
13210220411
6
Senary
1345251433
8
Octal
76722715
10
Decimal
16491981
12
Duodecimal
5633b79
16
Hexadecimal
fba5cd
20
Vigesimal
5319j1
36
Base36
9thal
md5
b0c8b5cc061e5fbf0758547e6f035350
sha1
25db8466443dfc2b1dea842b10eb8c3caed6f343
sha256
f40e0adc796d77ed56390dc75a03793ac141fb700abf23595bbad84fdd550c8a
sha512
b91aaa476203bbf4db55d1624e5b18d9affb4d245c5c9ac60f9edf61e0c04b1611b887623e5f772b05510cb674093d12dfe92c2fe8c0a4dcd2ae41e2baf81432
ripemd-160
3c0f40b78986604854b349663f933c297e428e23
Diameter
32983962
Circumference
103622172.70548
Area
8.5446745171879E+14
Volume
1.878914797182E+22
Surface area
3.4178698068752E+15
Circumference
103622172.70548
Perimeter
65967924
Area
271985437304361
Diagonal
23323183.200599
Surface area
1631912623826166
Volume
4.4855786643002E+21
Space diagonal
28564949.009461
Perimeter
49475943
Area
1.177731490825E+14
Altitude
14282474.50473
Surface area
1.177731490825E+14
Volume
5.2863051517873E+20
Height
7774394.4001998