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

81128 (number)

81128 is an even 5-digits composite number following 81127 and preceding 81129. In scientific notation, it is written as 8.1128 × 10^4. The sum of its digits is 20. It has a total of 4 prime factors and 8 positive divisors. There are 40560 positive integers (up to 81128) that are relatively prime to 81128.

Interesting facts

81128 has 8 divisors, whose sum is 152130
The reverse of 81128 is 82118
Previous prime number is 2

Basic properties

Is Prime? no
Number parity even
Number length 5
Sum of Digits 20
Digital Root 2

Name

Name	eighty-one thousand one hundred twenty-eight

Notation

Scientific notation	8.1128 × 10^4
Engineering notation	8.1128 × 10^3

Prime Factorization of 81128

Prime Factorization 2 × 2 × 2 × 10141

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	4	Total number of prime factors
rad	Radical	20282	Product of the distinct prime numbers

The prime factorization of 81128 is 2 × 2 × 2 × 10141. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 3, 26, 73, 402, 505, 5271, 8613, 29365, 32503, 200099, 179258, 7003596, 6449113, 43046194, 91693102, 780921328, 257807401, 3271070776, 595569335

Basic calculations (n = 81128)

Multiplication

n×y

n×2	162256
n×3	243384
n×4	324512
n×5	405640

Division

n÷y

n÷2	40564
n÷3	27042.666666667
n÷3	20282
n÷5	16225.6

Exponentiation

n^y

n²	6581752384
n³	533964407409152
n⁴	4.331946444429E+19
n⁵	3.5144215114363E+24

Nth Root

^y√n

²√n	284.82977372459
³√n	43.290266218881
⁴√n	16.876900595921
⁵√n	9.5903433066921

Divisors of 81128

1, 2, 4, 8, 10141, 20282, 40564, 81128

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	-81127	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 81128 can be divided by 8 positive divisors. The sum of these divisors (counting 81128) is 1, the average is 0.125.

Base conversion 81128

Base	System	Value
2	Binary	10011110011101000
3	Ternary	11010021202
4	Quaternary	103303220
5	Quinary	10044003
6	Senary	1423332
8	Octal	236350
10	Decimal	81128
12	Duodecimal	3ab48
16	Hexadecimal	13ce8
20	Vigesimal	a2g8
36	Base36	1qlk

Cryptographic Hash Functions

md5	5115cab247e849d70bd0da72c5958432
sha1	f994c5e37d8ff3fa99c09f7ad9607801a2259d6e
sha256	98fd4cb1d6b2b3fcb8146c03012c9f34212d7a7acbefe4b5f5f0bdf48f8890df
sha512	fa5b6475b3803a9168ed911f895cd7fded4bbd1267781e092a2c8fa35ff185510cc6a42519ba365282eaa215cc7d4d35ef1586c7607910f3b3a34a2d33db7dab
ripemd-160	90c4b51cc8308c32e2d5933d06d26bdfc153726b

81128 as geometric shapes

Circle

Radius = n

Diameter	162256
Circumference	509742.25760087
Area	20677184937.322

Sphere

Radius = n

Volume	2.23666487946E+15
Surface area	82708739749.286
Circumference	509742.25760087

Square

Length = n

Perimeter	324512
Area	6581752384
Diagonal	114732.3178882

Cube

Length = n

Surface area	39490514304
Volume	533964407409152
Space diagonal	140517.81791645

Equilateral Triangle

Length = n

Perimeter	243384
Area	2849982382.9814
Altitude	70258.908958224

Triangular Pyramid

Length = n

Surface area	2849982382.9814
Volume	62928308898545
Height	38244.105962735