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

128891 (number)

128891 is an odd 6-digits composite number following 128890 and preceding 128892. In scientific notation, it is written as 1.28891 × 10^5. The sum of its digits is 29. It has a total of 2 prime factors and 4 positive divisors. There are 110472 positive integers (up to 128891) that are relatively prime to 128891.

Interesting facts

128891 has 4 divisors, whose sum is 147312
The reverse of 128891 is 198821
Previous prime number is 7

Basic properties

Is Prime? no
Number parity odd
Number length 6
Sum of Digits 29
Digital Root 2

Name

Name	one hundred twenty-eight thousand eight hundred ninety-one

Notation

Scientific notation	1.28891 × 10^5
Engineering notation	1.28891 × 10^3

Prime Factorization of 128891

Prime Factorization 7 × 18413

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	128891	Product of the distinct prime numbers

The prime factorization of 128891 is 7 × 18413. Since it has a total of 2 prime factors.

Most popular turbo-numbers

9, 8, 10, 87, 383, 208, 9579, 9608, 74825, 41032, 58486, 102712, 7822930, 9219389, 91187572, 27091397, 653558445, 910686296, 7816210496, 9888462279

Basic calculations (n = 128891)

Multiplication

n×y

n×2	257782
n×3	386673
n×4	515564
n×5	644455

Division

n÷y

n÷2	64445.5
n÷3	42963.666666667
n÷3	32222.75
n÷5	25778.2

Exponentiation

n^y

n²	16612889881
n³	2141251989651971
n⁴	2.7598811019823E+20
n⁵	3.557238351156E+25

Nth Root

^y√n

²√n	359.01392730645
³√n	50.513508133631
⁴√n	18.947662845492
⁵√n	10.520697137998

Divisors of 128891

1, 7, 18413, 128891

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-128890	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 128891 can be divided by 4 positive divisors. The sum of these divisors (counting 128891) is 1, the average is 0.25.

Base conversion 128891

Base	System	Value
2	Binary	11111011101111011
3	Ternary	20112210202
4	Quaternary	133131323
5	Quinary	13111031
6	Senary	2432415
8	Octal	373573
10	Decimal	128891
12	Duodecimal	6270b
16	Hexadecimal	1f77b
20	Vigesimal	g24b
36	Base36	2rgb

Cryptographic Hash Functions

md5	9db50524e6efe89539a2ddd6b961cd79
sha1	3b8e69d137cab067f385e79ffbec853661dfcacf
sha256	4344f0b8b6ff0c05a246cb16c9a347c92d41873fa4f11fb6e90596318452677e
sha512	6d0ff8b1722204a45c22ba620ef7ccf59b7a70130ea8264284227c8c8f732d0ba5c0c1e63d5693dab5f1e01a462d544fc514c72007a88603931a9027b2a66263
ripemd-160	d46b2943a2f538438d3cb23d428e46d3df4eb577

128891 as geometric shapes

Circle

Radius = n

Diameter	257782
Circumference	809846.03742768
Area	52190932805.046

Sphere

Radius = n

Volume	8.9692553602335E+15
Surface area	208763731220.18
Circumference	809846.03742768

Square

Length = n

Perimeter	515564
Area	16612889881
Diagonal	182279.40026783

Cube

Length = n

Surface area	99677339286
Volume	2141251989651971
Space diagonal	223245.76063836

Equilateral Triangle

Length = n

Perimeter	386673
Area	7193592333.6097
Altitude	111622.88031918

Triangular Pyramid

Length = n

Surface area	7193592333.6097
Volume	2.5234896701868E+14
Height	60759.800089277