81445837 (number)

81445837 is an odd 8-digits composite number following 81445836 and preceding 81445838. In scientific notation, it is written as 8.1445837 × 10^7. The sum of its digits is 40. It has a total of 4 prime factors and 16 positive divisors. There are 69724800 positive integers (up to 81445837) that are relatively prime to 81445837.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred forty-five thousand eight hundred thirty-seven

Notation

Scientific notation 8.1445837 × 10^7
Engineering notation 8.1445837 × 10^6

Prime Factorization of 81445837

Prime Factorization 19 × 11 × 181 × 2153

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81445837
Product of the distinct prime numbers

The prime factorization of 81445837 is 19 × 11 × 181 × 2153. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 2, 79, 44, 323, 746, 7233, 9093, 95991, 79074, 127121, 821066, 5884780, 488119, 68662304, 15870442, 242710781, 308177901, 6154430116, 3908537084

Basic calculations (n = 81445837)

Multiplication

n×y
n×2 162891674
n×3 244337511
n×4 325783348
n×5 407229185

Division

n÷y
n÷2 40722918.5
n÷3 27148612.333333
n÷3 20361459.25
n÷5 16289167.4

Exponentiation

ny
n2 6633424364630569
n3 5.4026479955353E+23
n4 4.4002318801274E+31
n5 3.5838056847106E+39

Nth Root

y√n
2√n 9024.7347329437
3√n 433.46725637103
4√n 94.998603847339
5√n 38.209713222042

Divisors of 81445837

1, 11, 19, 181, 209, 1991, 2153, 3439, 23683, 37829, 40907, 389693, 449977, 4286623, 7404167, 81445837

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 -81445836
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 81445837 can be divided by 16 positive divisors. The sum of these divisors (counting 81445837) is 1, the average is 0.0625.

Base conversion 81445837

Base System Value
2 Binary 100110110101100001111001101
3 Ternary 12200020212200111
4 Quaternary 10312230033031
5 Quinary 131322231322
6 Senary 12025400021
8 Octal 466541715
10 Decimal 81445837
12 Duodecimal 23339011
16 Hexadecimal 4dac3cd
20 Vigesimal 1590ebh
36 Base36 1cho0d

Cryptographic Hash Functions

md5 fabfae407b2cc4cf134d2144c0a944f8
sha1 9b205cd25b22d7527e19e035efd8b7fe17a1bc63
sha256 212a30fb49fa5500d6db0fbf7e60695a98481594f15d817289009486bf455e10
sha512 3b0fdc262e9471a2d5784ea82d6e6b7287b332f5a598583f51532f69b5508f81bc7b773b997d91e5ccf74293a98c0b9ad6db821fbc2f395e8481ae50259f6f8d
ripemd-160 45dcde76f6e526e71c896a0290643be44362372a

81445837 as geometric shapes

Circle

Radius = n
Diameter 162891674
Circumference 511739286.36934
Area 2.0839517252067E+16

Sphere

Radius = n
Volume 2.2630559003607E+24
Surface area 8.3358069008268E+16
Circumference 511739286.36934

Square

Length = n
Perimeter 325783348
Area 6633424364630569
Diagonal 115181807.28423

Cube

Length = n
Surface area 39800546187783414
Volume 5.4026479955353E+23
Space diagonal 141068327.74897

Equilateral Triangle

Length = n
Perimeter 244337511
Area 2.8723570069264E+15
Altitude 70534163.874487

Triangular Pyramid

Length = n
Surface area 2.8723570069264E+15
Volume 6.3670817233449E+22
Height 38393935.761409