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

81445855 (number)

81445855 is an odd 8-digits composite number following 81445854 and preceding 81445856. In scientific notation, it is written as 8.1445855 × 10^7. The sum of its digits is 40. It has a total of 3 prime factors and 8 positive divisors. There are 65105376 positive integers (up to 81445855) that are relatively prime to 81445855.

Interesting facts

81445855 has 8 divisors, whose sum is 97812000
The reverse of 81445855 is 55854418
Previous prime number is 11399

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 40
Digital Root 4

Name

Name	eighty-one million four hundred forty-five thousand eight hundred fifty-five

Notation

Scientific notation	8.1445855 × 10^7
Engineering notation	8.1445855 × 10^6

Prime Factorization of 81445855

Prime Factorization 5 × 11399 × 1429

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81445855	Product of the distinct prime numbers

The prime factorization of 81445855 is 5 × 11399 × 1429. Since it has a total of 3 prime factors.

Most popular turbo-numbers

8, 2, 76, 38, 281, 323, 1910, 8525, 8696, 96137, 804054, 607875, 7522423, 5132351, 16650557, 26762759, 918852146, 385980085, 8038037543, 7721864307

Basic calculations (n = 81445855)

Multiplication

n×y

n×2	162891710
n×3	244337565
n×4	325783420
n×5	407229275

Division

n÷y

n÷2	40722927.5
n÷3	27148618.333333
n÷3	20361463.75
n÷5	16289171

Exponentiation

n^y

n²	6633427296681025
n³	5.4026515775852E+23
n⁴	4.4002357700353E+31
n⁵	3.5838096449211E+39

Nth Root

^y√n

²√n	9024.7357302029
³√n	433.46728830395
⁴√n	94.998609096149
⁵√n	38.209714910955

Divisors of 81445855

1, 5, 1429, 7145, 11399, 56995, 16289171, 81445855

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	-81445854	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 81445855 can be divided by 8 positive divisors. The sum of these divisors (counting 81445855) is 1, the average is 0.125.

Base conversion 81445855

Base	System	Value
2	Binary	100110110101100001111011111
3	Ternary	12200020212201011
4	Quaternary	10312230033133
5	Quinary	131322231410
6	Senary	12025400051
8	Octal	466541737
10	Decimal	81445855
12	Duodecimal	23339027
16	Hexadecimal	4dac3df
20	Vigesimal	1590ecf
36	Base36	1cho0v

Cryptographic Hash Functions

md5	394735990e8f747cd971075ae4dbdef9
sha1	e30c36184fd26facf542b7a89bf0bbd79a3afa55
sha256	5d01e51d38eda0643fc0772d019978f8e1ad808677a95b633d5f6f1b1e37ae29
sha512	806ecc373fc7cd03aa9b05e21478309bf2f4631e3d438a851a213d0a2a15f96776f5a135d7d01b019f2fa9e5feb0b562a05e33f43b45c62f9d3c159e1b0c4eb2
ripemd-160	66bfb4225955c73229fa86ecb72e73038a190bba

81445855 as geometric shapes

Circle

Radius = n

Diameter	162891710
Circumference	511739399.46668
Area	2.0839526463375E+16

Sphere

Radius = n

Volume	2.2630574008063E+24
Surface area	8.33581058535E+16
Circumference	511739399.46668

Square

Length = n

Perimeter	325783420
Area	6633427296681025
Diagonal	115181832.74007

Cube

Length = n

Surface area	39800563780086150
Volume	5.4026515775852E+23
Space diagonal	141068358.92589

Equilateral Triangle

Length = n

Perimeter	244337565
Area	2.8723582765415E+15
Altitude	70534179.462944

Triangular Pyramid

Length = n

Surface area	2.8723582765415E+15
Volume	6.3670859448312E+22
Height	38393944.246691