18397890 (number)
18397890 is an even 8-digits composite number following 18397889 and preceding 18397891. In scientific notation, it is written as 1.8397890 × 10^7. The sum of its digits is 45. It has a total of 7 prime factors and 128 positive divisors. There are 3773952 positive integers (up to 18397890) that are relatively prime to 18397890.
Interesting facts
- 18397890 has 128 divisors, whose sum is 54120960
- The reverse of 18397890 is 09879381
- Previous prime number is 53
Basic properties
- Is Prime? no
- Number parity even
- Number length 8
- Sum of Digits 45
- Digital Root 9
Name
| Name | eighteen million three hundred ninety-seven thousand eight hundred ninety |
|---|
Notation
| Scientific notation | 1.8397890 × 10^7 |
|---|---|
| Engineering notation | 1.8397890 × 10^6 |
Prime Factorization of 18397890
Prime Factorization 2 × 3 × 57 × 5 × 7 × 53 × 29
Composite number| ω | Distinct Factors | 7 | Total number of distinct prime factors |
|---|---|---|---|
| Ω | Total Factors | 7 | Total number of prime factors |
| rad | Radical | 18397890 | Product of the distinct prime numbers |
The prime factorization of 18397890 is 2 × 3 × 57 × 5 × 7 × 53 × 29. Since it has a total of 7 prime factors.
Most popular turbo-numbers
Basic calculations (n = 18397890)
Multiplication
n×y| n×2 | 36795780 |
|---|---|
| n×3 | 55193670 |
| n×4 | 73591560 |
| n×5 | 91989450 |
Division
n÷y| n÷2 | 9198945 |
|---|---|
| n÷3 | 6132630 |
| n÷3 | 4599472.5 |
| n÷5 | 3679578 |
Exponentiation
ny| n2 | 338482356452100 |
|---|---|
| n3 | 6.2273611609465E+21 |
| n4 | 1.1457030562937E+29 |
| n5 | 2.1078518802355E+36 |
Nth Root
y√n| 2√n | 4289.2761627109 |
|---|---|
| 3√n | 263.99113262227 |
| 4√n | 65.492565705665 |
| 5√n | 28.37615864915 |
Divisors of 18397890
128 divisors
| τ | Total Divisors | 128 | Total number of the positive divisors of n |
|---|---|---|---|
| σ | Sum of Divisors | 1 | Sum of all the positive divisors of n |
| s | Aliquot Sum | -18397889 | Sum of the proper positive divisors of n |
| A | Arithmetic Mean | 0.0078125 | 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 | 128 | Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors |
The number 18397890 can be divided by 128 positive divisors. The sum of these divisors (counting 18397890) is 1, the average is 0.0078125.
Base conversion 18397890
| Base | System | Value |
|---|---|---|
| 2 | Binary | 1000110001011101011000010 |
| 3 | Ternary | 1021121201011100 |
| 4 | Quaternary | 1012023223002 |
| 5 | Quinary | 14202213030 |
| 6 | Senary | 1454155230 |
| 8 | Octal | 106135302 |
| 10 | Decimal | 18397890 |
| 12 | Duodecimal | 61b2b16 |
| 16 | Hexadecimal | 118bac2 |
| 20 | Vigesimal | 5ejeea |
| 36 | Base36 | aybwi |
Cryptographic Hash Functions
| md5 | a04c6c997c5079dba281a8a4c6a96f44 |
|---|---|
| sha1 | fb1c43fa656ce187c2fb2efd64a6bed5f73c991f |
| sha256 | 32416ebb9af6c6212f5c85e476414e90ee724e3454513a6b550b056ac6697e88 |
| sha512 | a1b0056351fd5f1b26311c88569c28578729a1c2a90db4d0ca1318c872bd10918c4d91b84d33d88d8223c453e07813ccfd39d77e6eef21dce025e457a351ee9f |
| ripemd-160 | 4e0e988b7207b79e960ceb88824fcdda6f624dc0 |
18397890 as geometric shapes
Circle
Radius = n| Diameter | 36795780 |
|---|---|
| Circumference | 115597352.13111 |
| Area | 1.0633736843997E+15 |
Sphere
Radius = n| Volume | 2.608510943264E+22 |
|---|---|
| Surface area | 4.2534947375987E+15 |
| Circumference | 115597352.13111 |
Square
Length = n| Perimeter | 73591560 |
|---|---|
| Area | 338482356452100 |
| Diagonal | 26018545.557048 |
Cube
Length = n| Surface area | 2030894138712600 |
|---|---|
| Volume | 6.2273611609465E+21 |
| Space diagonal | 31866080.232063 |
Equilateral Triangle
Length = n| Perimeter | 55193670 |
|---|---|
| Area | 1.4656715971017E+14 |
| Altitude | 15933040.116032 |
Triangular Pyramid
Length = n| Surface area | 1.4656715971017E+14 |
|---|---|
| Volume | 7.3390155096717E+20 |
| Height | 8672848.5190161 |