81445900 (number)

81445900 is an even 8-digits composite number following 81445899 and preceding 81445901. In scientific notation, it is written as 8.1445900 × 10^7. The sum of its digits is 31. It has a total of 5 prime factors and 24 positive divisors. There are 32376640 positive integers (up to 81445900) that are relatively prime to 81445900.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred forty-five thousand nine hundred

Notation

Scientific notation 8.1445900 × 10^7
Engineering notation 8.1445900 × 10^6

Prime Factorization of 81445900

Prime Factorization 2 × 2 × 25 × 167 × 4877

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40722950
Product of the distinct prime numbers

The prime factorization of 81445900 is 2 × 2 × 25 × 167 × 4877. Since it has a total of 5 prime factors.

Most popular turbo-numbers

6, 7, 39, 51, 456, 39, 1095, 1968, 53146, 31291, 248504, 846402, 1364451, 3525726, 40726332, 48071180, 568251003, 55721079, 7643420204, 5203570375

Basic calculations (n = 81445900)

Multiplication

n×y
n×2 162891800
n×3 244337700
n×4 325783600
n×5 407229500

Division

n÷y
n÷2 40722950
n÷3 27148633.333333
n÷3 20361475
n÷5 16289180

Exponentiation

ny
n2 6633434626810000
n3 5.402660532717E+23
n4 4.4002454948162E+31
n5 3.5838195454625E+39

Nth Root

y√n
2√n 9024.7382233503
3√n 433.46736813622
4√n 94.998622218169
5√n 38.209719133237

Divisors of 81445900

1, 2, 4, 25, 50, 100, 167, 334, 668, 4175, 4877, 8350, 9754, 16700, 19508, 121925, 243850, 487700, 814459, 1628918, 3257836, 20361475, 40722950, 81445900

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81445899
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81445900 can be divided by 24 positive divisors. The sum of these divisors (counting 81445900) is 1, the average is 0.041666666666667.

Base conversion 81445900

Base System Value
2 Binary 100110110101100010000001100
3 Ternary 12200020212202211
4 Quaternary 10312230100030
5 Quinary 131322232100
6 Senary 12025400204
8 Octal 466542014
10 Decimal 81445900
12 Duodecimal 23339064
16 Hexadecimal 4dac40c
20 Vigesimal 1590ef0
36 Base36 1cho24

Cryptographic Hash Functions

md5 3fd7c60d2c959c1da0e22bbb05d4b928
sha1 4bea70b346e06f709c83174b329455874eae2efb
sha256 9572f48035b704a778b9bedf2a80d81d4d008413d2ff0a25f45c008302d1909b
sha512 bf70e95728abe80380755df7d5c86d5a8cd7010c9b7185ae6d0f610eb38a8f360c9864683793282d0f859396a9d0d2bf42424aead1f486c900cf4a38180bb904
ripemd-160 6063e15c2772b9c12a9347af0b0ba2a8f9e8f0d5

81445900 as geometric shapes

Circle

Radius = n
Diameter 162891800
Circumference 511739682.21002
Area 2.0839549491654E+16

Sphere

Radius = n
Volume 2.2630611519231E+24
Surface area 8.3358197966618E+16
Circumference 511739682.21002

Square

Length = n
Perimeter 325783600
Area 6633434626810000
Diagonal 115181896.37968

Cube

Length = n
Surface area 39800607760860000
Volume 5.402660532717E+23
Space diagonal 141068436.86817

Equilateral Triangle

Length = n
Perimeter 244337700
Area 2.8723614505804E+15
Altitude 70534218.434087

Triangular Pyramid

Length = n
Surface area 2.8723614505804E+15
Volume 6.3670964985552E+22
Height 38393965.459894