19987789 is an odd 8-digits prime number following 19987788
and preceding 19987790 . In scientific notation, it is written as 1.9987789 × 10^7.
The sum of its digits is 58. It has a total of 1 prime factors and 2 positive divisors.
There are 19987788 positive integers (up to 19987789) that are relatively prime to 19987789.
19987789 has 2 divisors, whose sum is 19987790
The reverse of 19987789 is 98778991
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 58 Digital Root 4
Name
nineteen million nine hundred eighty-seven thousand seven hundred eighty-nine
Scientific notation
1.9987789 × 10^7
Engineering notation
1.9987789 × 10^6
Prime Factorization
19987789
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
19987789 Product of the distinct prime numbers
The prime factorization of 19987789 is 19987789.
Since it has a total of 1 prime factors.
7 , 1 , 57 , 87 , 38 , 773 , 2131 , 7269 , 27246 , 81823 , 505594 , 460498 , 379393 , 6444566 , 26500139 , 31170870 , 105982876 , 206408410 , 9738705425 , 386201908
n×2
39975578
n×3
59963367
n×4
79951156
n×5
99938945
n÷2
9993894.5
n÷3
6662596.3333333
n÷3
4996947.25
n÷5
3997557.8
n2
399511709108521
n3
7.9853557446905E+21
n4
1.5960960571481E+29
n5
3.1902431214008E+36
2 √n4470.7705152468
3 √n271.38650749029
4 √n66.863820674912
5 √n28.850473895643
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
19987790 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
9993895 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
4470.7706270843 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999998999389 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 19987789 can be divided by 2 positive divisors.
The sum of these divisors (counting 19987789) is 19987790, the average is 9993895.
Base
System
Value
2
Binary
1001100001111110101001101
3
Ternary
1101121111002111
4
Quaternary
1030033311031
5
Quinary
20104102124
6
Senary
1552224021
8
Octal
114176515
10
Decimal
19987789
12
Duodecimal
683b011
16
Hexadecimal
130fd4d
20
Vigesimal
64i999
36
Base36
bweod
md5
64d31cb7211871fe460537ff45d5ce41
sha1
8cea6367947b76557334f05e25d9dbbc5e6cfdb6
sha256
6412cd01a3716cf9de78611550211f4c520cce1f1841dee2587cb8386dd5396b
sha512
77c516433e0cd4ec2b17cfd76e596b19d0ef3076d59e001bef9e3472300bcc819674d31dd6cdc7694661c8d982b0c7524546bc3a14c42d0a49b0a5fe35a22084
ripemd-160
b9ee32c1628b136a1bfe8605c94ab325300c8bcc
Diameter
39975578
Circumference
125586982.16781
Area
1.2551030503584E+15
Volume
3.3448979925094E+22
Surface area
5.0204122014337E+15
Circumference
125586982.16781
Perimeter
79951156
Area
399511709108521
Diagonal
28267002.285652
Surface area
2397070254651126
Volume
7.9853557446905E+21
Space diagonal
34619866.078966
Perimeter
59963367
Area
1.7299364459866E+14
Altitude
17309933.039483
Surface area
1.7299364459866E+14
Volume
9.4108319954293E+20
Height
9422334.0952173