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

128640 (number)

128640 is an even 6-digits composite number following 128639 and preceding 128641. In scientific notation, it is written as 1.28640 × 10^5. The sum of its digits is 21. It has a total of 9 prime factors and 32 positive divisors. There are 33792 positive integers (up to 128640) that are relatively prime to 128640.

Interesting facts

128640 has 32 divisors, whose sum is 277440
The reverse of 128640 is 046821
Previous prime number is 15

Basic properties

Is Prime? no
Number parity even
Number length 6
Sum of Digits 21
Digital Root 3

Name

Name	one hundred twenty-eight thousand six hundred forty

Notation

Scientific notation	1.28640 × 10^5
Engineering notation	1.28640 × 10^3

Prime Factorization of 128640

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 2 × 15 × 67

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	9	Total number of prime factors
rad	Radical	2010	Product of the distinct prime numbers

The prime factorization of 128640 is 2 × 2 × 2 × 2 × 2 × 2 × 2 × 15 × 67. Since it has a total of 9 prime factors.

Most popular turbo-numbers

10, 7, 62, 28, 60, 249, 927, 7872, 63849, 52127, 488594, 386935, 1458810, 6249820, 52430717, 30650180, 381043435, 654122591, 8101094000, 9592201822

Basic calculations (n = 128640)

Multiplication

n×y

n×2	257280
n×3	385920
n×4	514560
n×5	643200

Division

n÷y

n÷2	64320
n÷3	42880
n÷3	32160
n÷5	25728

Exponentiation

n^y

n²	16548249600
n³	2128766828544000
n⁴	2.738445648239E+20
n⁵	3.5227364818947E+25

Nth Root

^y√n

²√n	358.66418834336
³√n	50.4806971288
⁴√n	18.938431517508
⁵√n	10.516596379427

Divisors of 128640

1, 2, 4, 8, 15, 16, 30, 32, 60, 64, 67, 120, 128, 134, 240, 268, 480, 536, 960, 1005, 1072, 1920, 2010, 2144, 4020, 4288, 8040, 8576, 16080, 32160, 64320, 128640

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	-128639	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 128640 can be divided by 32 positive divisors. The sum of these divisors (counting 128640) is 1, the average is 0.03125.

Base conversion 128640

Base	System	Value
2	Binary	11111011010000000
3	Ternary	20112110110
4	Quaternary	133122000
5	Quinary	13104030
6	Senary	2431320
8	Octal	373200
10	Decimal	128640
12	Duodecimal	62540
16	Hexadecimal	1f680
20	Vigesimal	g1c0
36	Base36	2r9c

Cryptographic Hash Functions

md5	97ada86ff486da1fe7bcaeb3ce6e27ef
sha1	084bd0ae18a63e2a7664a433b8611a62533dd392
sha256	1e1bf28fc54c0a050b4573bcc1959d576923af203793d073822b4457362f727d
sha512	8d5d3b922d3e848a689569c390fa0c1c844896fb291a93e56a093e1967264080cb6854973c10b07cc187248876134556e4c0c4cf44558c3bfa5621826c196b82
ripemd-160	9b474b1732cfa3ffa978e101a3491963e440ff02

128640 as geometric shapes

Circle

Radius = n

Diameter	257280
Circumference	808268.95791558
Area	51987859373.13

Sphere

Radius = n

Volume	8.9169576396793E+15
Surface area	207951437492.52
Circumference	808268.95791558

Square

Length = n

Perimeter	514560
Area	16548249600
Diagonal	181924.43266367

Cube

Length = n

Surface area	99289497600
Volume	2128766828544000
Space diagonal	222811.01588566

Equilateral Triangle

Length = n

Perimeter	385920
Area	7165602270.8828
Altitude	111405.50794283

Triangular Pyramid

Length = n

Surface area	7165602270.8828
Volume	2.5087757667141E+14
Height	60641.477554558