18991640 (number)

18991640 is an even 8-digits composite number following 18991639 and preceding 18991641. In scientific notation, it is written as 1.8991640 × 10^7. The sum of its digits is 38. It has a total of 6 prime factors and 32 positive divisors. There are 7196544 positive integers (up to 18991640) that are relatively prime to 18991640.

Interesting facts

Basic properties

Name

Name eighteen million nine hundred ninety-one thousand six hundred forty

Notation

Scientific notation 1.8991640 × 10^7
Engineering notation 1.8991640 × 10^6

Prime Factorization of 18991640

Prime Factorization 2 × 2 × 2 × 5 × 19 × 24989

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 4747910
Product of the distinct prime numbers

The prime factorization of 18991640 is 2 × 2 × 2 × 5 × 19 × 24989. Since it has a total of 6 prime factors.

Most popular turbo-numbers

8, 7, 40, 39, 771, 365, 6531, 5766, 86324, 31278, 823351, 13418, 8219230, 6821686, 79114731, 91349119, 198426819, 933565333, 4959842460, 9585651247

Basic calculations (n = 18991640)

Multiplication

n×y
n×2 37983280
n×3 56974920
n×4 75966560
n×5 94958200

Division

n÷y
n÷2 9495820
n÷3 6330546.6666667
n÷3 4747910
n÷5 3798328

Exponentiation

ny
n2 360682389889600
n3 6.8499501031229E+21
n4 1.3009178637647E+29
n5 2.4706563738189E+36

Nth Root

y√n
2√n 4357.9398802645
3√n 266.80102257325
4√n 66.014694426806
5√n 28.556994235004

Divisors of 18991640

1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 24989, 49978, 99956, 124945, 199912, 249890, 474791, 499780, 949582, 999560, 1899164, 2373955, 3798328, 4747910, 9495820, 18991640

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 -18991639
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 18991640 can be divided by 32 positive divisors. The sum of these divisors (counting 18991640) is 1, the average is 0.03125.

Base conversion 18991640

Base System Value
2 Binary 1001000011100101000011000
3 Ternary 1022201212122002
4 Quaternary 1020130220120
5 Quinary 14330213030
6 Senary 1515020132
8 Octal 110345030
10 Decimal 18991640
12 Duodecimal 643a648
16 Hexadecimal 121ca18
20 Vigesimal 5idj20
36 Base36 bb21k

Cryptographic Hash Functions

md5 2b1a9de70f64dd8cd60eae00d6abaab6
sha1 b7de4416b48703b3a8fd8f11a8302a49d47dbdf8
sha256 16074ac6ddc92029212a62b150d13edecda2813372b0ccd32dba3f08ed107ee2
sha512 db6f9df77f050a72aab17d4af9b1779295d0f47fe933f4f3f5abbaa1b15c41c0153169d77dd496beccd7e66cd470d721354a728b545fcb5260325d45b3e86f99
ripemd-160 f9500b5ee2a5d8403bb733dff53cf1bed51c4cb9

18991640 as geometric shapes

Circle

Radius = n
Diameter 37983280
Circumference 119327993.40724
Area 1.1331171463564E+15

Sphere

Radius = n
Volume 2.8693003895237E+22
Surface area 4.5324685854255E+15
Circumference 119327993.40724

Square

Length = n
Perimeter 75966560
Area 360682389889600
Diagonal 26858234.859707

Cube

Length = n
Surface area 2164094339337600
Volume 6.8499501031229E+21
Space diagonal 32894485.399057

Equilateral Triangle

Length = n
Perimeter 56974920
Area 1.5618005617104E+14
Altitude 16447242.699529

Triangular Pyramid

Length = n
Surface area 1.5618005617104E+14
Volume 8.0727436145128E+20
Height 8952744.9532358