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

81120821 (number)

81120821 is an odd 8-digits composite number following 81120820 and preceding 81120822. In scientific notation, it is written as 8.1120821 × 10^7. The sum of its digits is 23. It has a total of 2 prime factors and 4 positive divisors. There are 76348992 positive integers (up to 81120821) that are relatively prime to 81120821.

Interesting facts

81120821 has 4 divisors, whose sum is 85892652
The reverse of 81120821 is 12802118
Previous prime number is 17

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 23
Digital Root 5

Name

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

Notation

Scientific notation	8.1120821 × 10^7
Engineering notation	8.1120821 × 10^6

Prime Factorization of 81120821

Prime Factorization 17 × 4771813

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81120821	Product of the distinct prime numbers

The prime factorization of 81120821 is 17 × 4771813. Since it has a total of 2 prime factors.

Most popular turbo-numbers

7, 1, 13, 76, 150, 690, 530, 6666, 70832, 84420, 306949, 856610, 985442, 1771166, 51232240, 17100858, 663623712, 996637487, 8298010309, 8201940021

Basic calculations (n = 81120821)

Multiplication

n×y

n×2	162241642
n×3	243362463
n×4	324483284
n×5	405604105

Division

n÷y

n÷2	40560410.5
n÷3	27040273.666667
n÷3	20280205.25
n÷5	16224164.2

Exponentiation

n^y

n²	6580587599714041
n³	5.3382266875122E+23
n⁴	4.330413315751E+31
n⁵	3.5128668344305E+39

Nth Root

^y√n

²√n	9006.7097766054
³√n	432.88989265636
⁴√n	94.903686844113
⁵√n	38.179168655408

Divisors of 81120821

1, 17, 4771813, 81120821

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	-81120820	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 81120821 can be divided by 4 positive divisors. The sum of these divisors (counting 81120821) is 1, the average is 0.25.

Base conversion 81120821

Base	System	Value
2	Binary	100110101011100111000110101
3	Ternary	12122122100211212
4	Quaternary	10311130320311
5	Quinary	131231331241
6	Senary	12014411205
8	Octal	465347065
10	Decimal	81120821
12	Duodecimal	23200b05
16	Hexadecimal	4d5ce35
20	Vigesimal	1570211
36	Base36	1cap85

Cryptographic Hash Functions

md5	f8348f68dd7bcdabc8132c7da766c94c
sha1	de4d82e7be33954c012ddbcb88ef84cb6a8d2179
sha256	f10741a8d7e16cc26123294efd1f21381cdb98ba6f8082567298ce091048fff9
sha512	a08fd663020c0d6e252864addff6d6b27078a1f13a5a0caa63be758e9e77af620ae60f9c4107fe3c016cdb27c3cc9c87d17a0d57c5045b2c78eb53af6d3e76b0
ripemd-160	282d8620b89b041754fe551160ca5c2fc3f41f7b

81120821 as geometric shapes

Circle

Radius = n

Diameter	162241642
Circumference	509697150.61355
Area	2.0673525659566E+16

Sphere

Radius = n

Volume	2.2360711659581E+24
Surface area	8.2694102638263E+16
Circumference	509697150.61355

Square

Length = n

Perimeter	324483284
Area	6580587599714041
Diagonal	114722165.24904

Cube

Length = n

Surface area	39483525598284246
Volume	5.3382266875122E+23
Space diagonal	140505383.5237

Equilateral Triangle

Length = n

Perimeter	243362463
Area	2.8494780165906E+15
Altitude	70252691.76185

Triangular Pyramid

Length = n

Surface area	2.8494780165906E+15
Volume	6.2911604837515E+22
Height	38240721.74968