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

81298981 (number)

81298981 is an odd 8-digits composite number following 81298980 and preceding 81298982. In scientific notation, it is written as 8.1298981 × 10^7. The sum of its digits is 46. It has a total of 3 prime factors and 8 positive divisors. There are 76446720 positive integers (up to 81298981) that are relatively prime to 81298981.

Interesting facts

81298981 has 8 divisors, whose sum is 86160024
The reverse of 81298981 is 18989218
Previous prime number is 2213

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 46
Digital Root 1

Name

Name	eighty-one million two hundred ninety-eight thousand nine hundred eighty-one

Notation

Scientific notation	8.1298981 × 10^7
Engineering notation	8.1298981 × 10^6

Prime Factorization of 81298981

Prime Factorization 17 × 2213 × 2161

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81298981	Product of the distinct prime numbers

The prime factorization of 81298981 is 17 × 2213 × 2161. Since it has a total of 3 prime factors.

Most popular turbo-numbers

2, 3, 51, 60, 357, 558, 6470, 5856, 72877, 35861, 954403, 828634, 262803, 2276653, 83719288, 73191853, 897017556, 512786864, 5928555494, 9372541342

Basic calculations (n = 81298981)

Multiplication

n×y

n×2	162597962
n×3	243896943
n×4	325195924
n×5	406494905

Division

n÷y

n÷2	40649490.5
n÷3	27099660.333333
n÷3	20324745.25
n÷5	16259796.2

Exponentiation

n^y

n²	6609524311638361
n³	5.3734759143093E+23
n⁴	4.3685811626139E+31
n⁵	3.551611969363E+39

Nth Root

^y√n

²√n	9016.5947563368
³√n	433.20656956155
⁴√n	94.955751570596
⁵√n	38.195923991368

Divisors of 81298981

1, 17, 2161, 2213, 36737, 37621, 4782293, 81298981

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	-81298980	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 81298981 can be divided by 8 positive divisors. The sum of these divisors (counting 81298981) is 1, the average is 0.125.

Base conversion 81298981

Base	System	Value
2	Binary	100110110001000011000100101
3	Ternary	12122222102020101
4	Quaternary	10312020120211
5	Quinary	131303031411
6	Senary	12022304101
8	Octal	466103045
10	Decimal	81298981
12	Duodecimal	23288031
16	Hexadecimal	4d88625
20	Vigesimal	1582791
36	Base36	1ceip1

Cryptographic Hash Functions

md5	11d414bb07cef124f727db8b31a7c9b6
sha1	1783eb6a1c9e7afc567fb5edba5ce8fa390f24a7
sha256	79680d96951998b6b5a15bf769640b44242c8e82c6aa5dabd6895f19bbf96b22
sha512	cfb6d86e8c288e097c8fae835d9d1ad16eda769e79a577af432e64dc399c094cd52abc97aba2d7ffffb2bee11e11f33e47b9f62cc4e878c4bd7054381c11c674
ripemd-160	02f84f88f8ecbcdde1b791fb6891aef11ef399b8

81298981 as geometric shapes

Circle

Radius = n

Diameter	162597962
Circumference	510816562.90787
Area	2.0764433021166E+16

Sphere

Radius = n

Volume	2.2508363275514E+24
Surface area	8.3057732084665E+16
Circumference	510816562.90787

Square

Length = n

Perimeter	325195924
Area	6609524311638361
Diagonal	114974121.53731

Cube

Length = n

Surface area	39657145869830166
Volume	5.3734759143093E+23
Space diagonal	140813965.69558

Equilateral Triangle

Length = n

Perimeter	243896943
Area	2.8620079804048E+15
Altitude	70406982.847788

Triangular Pyramid

Length = n

Surface area	2.8620079804048E+15
Volume	6.3327020959178E+22
Height	38324707.179104