19987904 (number)

19987904 is an even 8-digits composite number following 19987903 and preceding 19987905. In scientific notation, it is written as 1.9987904 × 10^7. The sum of its digits is 47. It has a total of 7 prime factors and 14 positive divisors. There are 9993920 positive integers (up to 19987904) that are relatively prime to 19987904.

Interesting facts

Basic properties

Name

Name nineteen million nine hundred eighty-seven thousand nine hundred four

Notation

Scientific notation 1.9987904 × 10^7
Engineering notation 1.9987904 × 10^6

Prime Factorization of 19987904

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 312311

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 624622
Product of the distinct prime numbers

The prime factorization of 19987904 is 2 × 2 × 2 × 2 × 2 × 2 × 312311. Since it has a total of 7 prime factors.

Most popular turbo-numbers

2, 4, 16, 81, 540, 826, 2429, 5000, 19357, 894, 693052, 791099, 8884906, 7984627, 90062118, 98282118, 232809646, 414218622, 4109365150, 2980308837

Basic calculations (n = 19987904)

Multiplication

n×y
n×2 39975808
n×3 59963712
n×4 79951616
n×5 99939520

Division

n÷y
n÷2 9993952
n÷3 6662634.6666667
n÷3 4996976
n÷5 3997580.8

Exponentiation

ny
n2 399516306313216
n3 7.9854935770232E+21
n4 1.5961327901016E+29
n5 3.1903348979802E+36

Nth Root

y√n
2√n 4470.783376546
3√n 271.38702796454
4√n 66.863916850167
5√n 28.850507093881

Divisors of 19987904

1, 2, 4, 8, 16, 32, 64, 312311, 624622, 1249244, 2498488, 4996976, 9993952, 19987904

14 divisors

τ Total Divisors 14
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -19987903
Sum of the proper positive divisors of n
A Arithmetic Mean 0.071428571428571
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 14
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 19987904 can be divided by 14 positive divisors. The sum of these divisors (counting 19987904) is 1, the average is 0.071428571428571.

Base conversion 19987904

Base System Value
2 Binary 1001100001111110111000000
3 Ternary 1101121111020202
4 Quaternary 1030033313000
5 Quinary 20104103104
6 Senary 1552224332
8 Octal 114176700
10 Decimal 19987904
12 Duodecimal 683b0a8
16 Hexadecimal 130fdc0
20 Vigesimal 64i9f4
36 Base36 bwerk

Cryptographic Hash Functions

md5 3b22ed39050cccee0974a433fb643736
sha1 b4f4fbc584067bf60ef162341df8a69e77feb744
sha256 ace71fdb390c5f004fbc0efc23393fd089d51162e1b1f1ee6a7785c458fdcf3c
sha512 b1f064c0cf845aafcdf713dea080ca94e18a43c3d99ef1a0b965d781c00680d6909e32abcdd350148022362f1e9b99b8f725ca13b4945f0c7af7b3db7dc8779d
ripemd-160 99a1d67b0c6639c4aef5995aba4b987b1e1ae916

19987904 as geometric shapes

Circle

Radius = n
Diameter 39975808
Circumference 125587704.73412
Area 1.2551174929029E+15

Sphere

Radius = n
Volume 3.3449557275819E+22
Surface area 5.0204699716117E+15
Circumference 125587704.73412

Square

Length = n
Perimeter 79951616
Area 399516306313216
Diagonal 28267164.920211

Cube

Length = n
Surface area 2397097837879296
Volume 7.9854935770232E+21
Space diagonal 34620065.264809

Equilateral Triangle

Length = n
Perimeter 59963712
Area 1.7299563524669E+14
Altitude 17310032.632405

Triangular Pyramid

Length = n
Surface area 1.7299563524669E+14
Volume 9.4109944323912E+20
Height 9422388.3067371