19979939 is an odd 8-digits composite number following 19979938
and preceding 19979940 . In scientific notation, it is written as 1.9979939 × 10^7.
The sum of its digits is 56. It has a total of 4 prime factors and 16 positive divisors.
There are 16270848 positive integers (up to 19979939) that are relatively prime to 19979939.
19979939 has 16 divisors, whose sum is 23987712
The reverse of 19979939 is 93997991
Previous prime number is 643
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 56
Digital Root 2
Name
nineteen million nine hundred seventy-nine thousand nine hundred thirty-nine
Scientific notation
1.9979939 × 10^7
Engineering notation
1.9979939 × 10^6
Prime Factorization
7 × 23 × 643 × 193
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
19979939
Product of the distinct prime numbers
The prime factorization of 19979939 is 7 × 23 × 643 × 193.
Since it has a total of 4 prime factors.
4 , 5 , 30 , 78 , 804 , 412 , 9240 , 9554 , 36185 , 40912 , 758940 , 909519 , 706322 , 7798399 , 66059899 , 97191967 , 567985487 , 244773090 , 7822960890 , 4656672395
n×2
39959878
n×3
59939817
n×4
79919756
n×5
99899695
n÷2
9989969.5
n÷3
6659979.6666667
n÷3
4994984.75
n÷5
3995987.8
n2
399197962443721
n3
7.9759509385498E+21
n4
1.5935901321922E+29
n5
3.1839833632202E+36
2 √n
4469.8925043003
3 √n
271.35097474511
4 √n
66.857254687134
5 √n
28.848207393761
1 , 7 , 23 , 161 , 193 , 643 , 1351 , 4439 , 4501 , 14789 , 31073 , 103523 , 124099 , 868693 , 2854277 , 19979939
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
-19979938
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 19979939 can be divided by 16 positive divisors.
The sum of these divisors (counting 19979939) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001100001101111010100011
3
Ternary
1101121002022202
4
Quaternary
1030031322203
5
Quinary
20103324224
6
Senary
1552123415
8
Octal
114157243
10
Decimal
19979939
12
Duodecimal
683656b
16
Hexadecimal
130dea3
20
Vigesimal
64h9gj
36
Base36
bw8mb
md5
dc1148b60e37a75b8e9eb210735744f4
sha1
74aebca834d19ca1405dd05d1584a1426496d8c6
sha256
792071716cc4be593131e982166884c74d2c9ac44345008b54a76918a1624b54
sha512
affe960bff51cd53bcbf1d188f80bdd95839f9549f86dfbca3710e612df952270da7f96039bcbd87ad600da6e7f0648fa312d3f14bd35f49fa248ae7c1239622
ripemd-160
5236dbd53b820bf4e56f51b0f2eb254919a14f43
Diameter
39959878
Circumference
125537659.16314
Area
1.2541173861412E+15
Volume
3.3409585165254E+22
Surface area
5.0164695445648E+15
Circumference
125537659.16314
Perimeter
79919756
Area
399197962443721
Diagonal
28255900.709187
Surface area
2395187774662326
Volume
7.9759509385498E+21
Space diagonal
34606269.480127
Perimeter
59939817
Area
1.7285778830762E+14
Altitude
17303134.740063
Surface area
1.7285778830762E+14
Volume
9.3997483250997E+20
Height
9418633.569729