Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

20389945 (number)

20389945 is an odd 8-digits composite number following 20389944 and preceding 20389946. In scientific notation, it is written as 2.0389945 × 10^7. The sum of its digits is 40. It has a total of 3 prime factors and 8 positive divisors. There are 15453360 positive integers (up to 20389945) that are relatively prime to 20389945.

Interesting facts

20389945 has 8 divisors, whose sum is 25755840
The reverse of 20389945 is 54998302
Previous prime number is 19

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 40
Digital Root 4

Name

Name	twenty million three hundred eighty-nine thousand nine hundred forty-five

Notation

Scientific notation	2.0389945 × 10^7
Engineering notation	2.0389945 × 10^6

Prime Factorization of 20389945

Prime Factorization 5 × 19 × 214631

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	20389945	Product of the distinct prime numbers

The prime factorization of 20389945 is 5 × 19 × 214631. Since it has a total of 3 prime factors.

Most popular turbo-numbers

1, 2, 19, 81, 532, 745, 2957, 2899, 74217, 62501, 369594, 185975, 7877861, 4243865, 38032250, 5861578, 361607295, 817323673, 5258075148, 6880240782

Basic calculations (n = 20389945)

Multiplication

n×y

n×2	40779890
n×3	61169835
n×4	81559780
n×5	101949725

Division

n÷y

n÷2	10194972.5
n÷3	6796648.3333333
n÷3	5097486.25
n÷5	4077989

Exponentiation

n^y

n²	415749857103025
n³	8.4771167200885E+21
n⁴	1.7284794368119E+29
n⁵	3.5243600650225E+36

Nth Root

^y√n

²√n	4515.522671851
³√n	273.1945417058
⁴√n	67.197638885983
⁵√n	28.965645477175

Divisors of 20389945

1, 5, 19, 95, 214631, 1073155, 4077989, 20389945

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-20389944	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	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	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20389945 can be divided by 8 positive divisors. The sum of these divisors (counting 20389945) is 1, the average is 0.125.

Base conversion 20389945

Base	System	Value
2	Binary	1001101110010000000111001
3	Ternary	1102100220202011
4	Quaternary	1031302000321
5	Quinary	20204434240
6	Senary	2005005521
8	Octal	115620071
10	Decimal	20389945
12	Duodecimal	69b38a1
16	Hexadecimal	1372039
20	Vigesimal	678eh5
36	Base36	c50zd

Cryptographic Hash Functions

md5	de6e4d8af643d12f9a3c0e8466422673
sha1	6031a85aee15eec7c7b3a67d9aa788308ff23278
sha256	33ad210a1af5da90913d8e1ed174b2ce8866d9afb62310809f5da8957a9b3591
sha512	3931f473e7d64ef29f8e2fb01d9dcdc7bb8ee4db9117a80318c957eab6f52d2b4c8373e33c58a109af9f41fb93e095379cf5ef833b967c9707bdf82ad2b1e9e8
ripemd-160	f3d7966922efe500615b909fc6b9cb907f89bbae

20389945 as geometric shapes

Circle

Radius = n

Diameter	40779890
Circumference	128113802.8382
Area	1.3061166968059E+15

Sphere

Radius = n

Volume	3.5508863481938E+22
Surface area	5.2244667872235E+15
Circumference	128113802.8382

Square

Length = n

Perimeter	81559780
Area	415749857103025
Diagonal	28835736.755041

Cube

Length = n

Surface area	2494499142618150
Volume	8.4771167200885E+21
Space diagonal	35316420.703535

Equilateral Triangle

Length = n

Perimeter	61169835
Area	1.8002496893548E+14
Altitude	17658210.351767

Triangular Pyramid

Length = n

Surface area	1.8002496893548E+14
Volume	9.9903778628075E+20
Height	9611912.2516805