81445810 (number)

81445810 is an even 8-digits composite number following 81445809 and preceding 81445811. In scientific notation, it is written as 8.1445810 × 10^7. The sum of its digits is 31. It has a total of 4 prime factors and 16 positive divisors. There are 30573312 positive integers (up to 81445810) that are relatively prime to 81445810.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1445810 × 10^7
Engineering notation 8.1445810 × 10^6

Prime Factorization of 81445810

Prime Factorization 2 × 3635 × 17 × 659

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81445810
Product of the distinct prime numbers

The prime factorization of 81445810 is 2 × 3635 × 17 × 659. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 4, 97, 83, 143, 722, 4344, 8488, 67075, 54744, 1034, 566288, 4440419, 5261602, 7111483, 500224, 564004735, 520599631, 9616176950, 9190565751

Basic calculations (n = 81445810)

Multiplication

n×y
n×2 162891620
n×3 244337430
n×4 325783240
n×5 407229050

Division

n÷y
n÷2 40722905
n÷3 27148603.333333
n÷3 20361452.5
n÷5 16289162

Exponentiation

ny
n2 6633419966556100
n3 5.4026426224633E+23
n4 4.4002260452705E+31
n5 3.5837997444015E+39

Nth Root

y√n
2√n 9024.7332370547
3√n 433.46720847164
4√n 94.998595974123
5√n 38.209710688672

Divisors of 81445810

1, 2, 17, 34, 659, 1318, 3635, 7270, 11203, 22406, 61795, 123590, 2395465, 4790930, 40722905, 81445810

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81445809
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81445810 can be divided by 16 positive divisors. The sum of these divisors (counting 81445810) is 1, the average is 0.0625.

Base conversion 81445810

Base System Value
2 Binary 100110110101100001110110010
3 Ternary 12200020212122111
4 Quaternary 10312230032302
5 Quinary 131322231220
6 Senary 12025355534
8 Octal 466541662
10 Decimal 81445810
12 Duodecimal 23338baa
16 Hexadecimal 4dac3b2
20 Vigesimal 1590eaa
36 Base36 1chnzm

Cryptographic Hash Functions

md5 c9c5323da101f6e3ceb9a42e9209329e
sha1 a75fc959101e0546bd8adc8714ebc26607ff4821
sha256 c15470da9492cbfd55d5e89b237cd7e5a0fe2bde5b331cc4d8ccb32812ec4333
sha512 4f14d60ae6e69bb3cdcd9b546cc057ef6fce8345dccb4e39951a21f6eed0d63cc47b1e8bf06917d7cb6d58f8dd1a9c5bb738510caadf283f8c956b761f4a8423
ripemd-160 4e20d46cd9cf2bd9ed27f46bee469794028b5484

81445810 as geometric shapes

Circle

Radius = n
Diameter 162891620
Circumference 511739116.72334
Area 2.0839503435108E+16

Sphere

Radius = n
Volume 2.2630536496936E+24
Surface area 8.3358013740434E+16
Circumference 511739116.72334

Square

Length = n
Perimeter 325783240
Area 6633419966556100
Diagonal 115181769.10046

Cube

Length = n
Surface area 39800519799336600
Volume 5.4026426224633E+23
Space diagonal 141068280.9836

Equilateral Triangle

Length = n
Perimeter 244337430
Area 2.8723551025043E+15
Altitude 70534140.491801

Triangular Pyramid

Length = n
Surface area 2.8723551025043E+15
Volume 6.3670753911188E+22
Height 38393923.033487