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

81128813 (number)

81128813 is an odd 8-digits composite number following 81128812 and preceding 81128814. In scientific notation, it is written as 8.1128813 × 10^7. The sum of its digits is 32. It has a total of 2 prime factors and 4 positive divisors. There are 80101788 positive integers (up to 81128813) that are relatively prime to 81128813.

Interesting facts

81128813 has 4 divisors, whose sum is 82155840
The reverse of 81128813 is 31882118
Previous prime number is 79

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5

Name

Name	eighty-one million one hundred twenty-eight thousand eight hundred thirteen

Notation

Scientific notation	8.1128813 × 10^7
Engineering notation	8.1128813 × 10^6

Prime Factorization of 81128813

Prime Factorization 79 × 1026947

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81128813	Product of the distinct prime numbers

The prime factorization of 81128813 is 79 × 1026947. Since it has a total of 2 prime factors.

Most popular turbo-numbers

7, 2, 28, 13, 927, 842, 4864, 443, 2311, 95887, 903570, 236346, 6827657, 634808, 36136195, 83136828, 517630520, 295292862, 459046191, 4272262460

Basic calculations (n = 81128813)

Multiplication

n×y

n×2	162257626
n×3	243386439
n×4	324515252
n×5	405644065

Division

n÷y

n÷2	40564406.5
n÷3	27042937.666667
n÷3	20282203.25
n÷5	16225762.6

Exponentiation

n^y

n²	6581884298788969
n³	5.3398046046409E+23
n⁴	4.3321200922645E+31
n⁵	3.5145976085887E+39

Nth Root

^y√n

²√n	9007.1534349094
³√n	432.90410825218
⁴√n	94.906024228757
⁵√n	38.179920905911

Divisors of 81128813

1, 79, 1026947, 81128813

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	-81128812	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 81128813 can be divided by 4 positive divisors. The sum of these divisors (counting 81128813) is 1, the average is 0.25.

Base conversion 81128813

Base	System	Value
2	Binary	100110101011110110101101101
3	Ternary	12122122202210212
4	Quaternary	10311132311231
5	Quinary	131232110223
6	Senary	12014512205
8	Octal	465366555
10	Decimal	81128813
12	Duodecimal	23205665
16	Hexadecimal	4d5ed6d
20	Vigesimal	157120d
36	Base36	1cave5

Cryptographic Hash Functions

md5	ed98eb838f238aa5db5210244ec9c7c9
sha1	284b1b189de7922d919d3f4001ef4b080f7be6a7
sha256	ea14a287ed2404d10e378688f5118459f27269fe785f5b0b56f015496b2d94c2
sha512	734efcdb796bde3e426327fd1ed0ef7a6e97724aff45b9b81a52a8146703def03769771adaa32cc189700f1ec4dae9fc95d312da04b2d25f61f2309a673bd764
ripemd-160	7947785be635dc531b4ff7d1e6c95321b4807b45

81128813 as geometric shapes

Circle

Radius = n

Diameter	162257626
Circumference	509747365.83052
Area	2.0677599359853E+16

Sphere

Radius = n

Volume	2.2367321223393E+24
Surface area	8.2710397439414E+16
Circumference	509747365.83052

Square

Length = n

Perimeter	324515252
Area	6581884298788969
Diagonal	114733467.64383

Cube

Length = n

Surface area	39491305792733814
Volume	5.3398046046409E+23
Space diagonal	140519226.07375

Equilateral Triangle

Length = n

Perimeter	243386439
Area	2.8500395037606E+15
Altitude	70259613.036877

Triangular Pyramid

Length = n

Surface area	2.8500395037606E+15
Volume	6.2930200769212E+22
Height	38244489.21461