81444620 (number)

81444620 is an even 8-digits composite number following 81444619 and preceding 81444621. In scientific notation, it is written as 8.1444620 × 10^7. The sum of its digits is 29. It has a total of 5 prime factors and 24 positive divisors. There are 30661376 positive integers (up to 81444620) that are relatively prime to 81444620.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred forty-four thousand six hundred twenty

Notation

Scientific notation 8.1444620 × 10^7
Engineering notation 8.1444620 × 10^6

Prime Factorization of 81444620

Prime Factorization 2 × 2 × 17 × 5 × 239543

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40722310
Product of the distinct prime numbers

The prime factorization of 81444620 is 2 × 2 × 17 × 5 × 239543. Since it has a total of 5 prime factors.

Most popular turbo-numbers

8, 7, 33, 90, 804, 28, 6958, 2725, 90104, 27705, 359020, 511086, 2743005, 4387529, 66311615, 55553923, 444627542, 844336283, 8697602270, 4366576808

Basic calculations (n = 81444620)

Multiplication

n×y
n×2 162889240
n×3 244333860
n×4 325778480
n×5 407223100

Division

n÷y
n÷2 40722310
n÷3 27148206.666667
n÷3 20361155
n÷5 16288924

Exponentiation

ny
n2 6633226126944400
n3 5.4024058128306E+23
n4 4.3999688851178E+31
n5 3.5835379386024E+39

Nth Root

y√n
2√n 9024.6673068873
3√n 433.46509733995
4√n 94.99824896748
5√n 38.209599032046

Divisors of 81444620

1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 239543, 479086, 958172, 1197715, 2395430, 4072231, 4790860, 8144462, 16288924, 20361155, 40722310, 81444620

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 -81444619
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 81444620 can be divided by 24 positive divisors. The sum of these divisors (counting 81444620) is 1, the average is 0.041666666666667.

Base conversion 81444620

Base System Value
2 Binary 100110110101011111100001100
3 Ternary 12200020211000102
4 Quaternary 10312223330030
5 Quinary 131322211440
6 Senary 12025350232
8 Octal 466537414
10 Decimal 81444620
12 Duodecimal 23338378
16 Hexadecimal 4dabf0c
20 Vigesimal 1590bb0
36 Base36 1chn2k

Cryptographic Hash Functions

md5 e59d7500fde012c6563d07bcd8dbc95a
sha1 1b28548cbadaea5d032aac616eb09445ed53eae0
sha256 e369306d6c4f99c6531a7f0ccc5338cf97b63683cb916b87ece5482285d71a88
sha512 ce7e76b62d9c5265d6ecdcf59154a11fd765ad0c386668986538f303b79d574c03c3a16eb2e624b98f606792e0ae391652fd4e5a0fda985182e0ad2ce10781dd
ripemd-160 2443f0a32e95bd54f3701307737c67511ac38caf

81444620 as geometric shapes

Circle

Radius = n
Diameter 162889240
Circumference 511731639.73282
Area 2.0838894470008E+16

Sphere

Radius = n
Volume 2.2629544551066E+24
Surface area 8.3355577880034E+16
Circumference 511731639.73282

Square

Length = n
Perimeter 325778480
Area 6633226126944400
Diagonal 115180086.18632

Cube

Length = n
Surface area 39799356761666400
Volume 5.4024058128306E+23
Space diagonal 141066219.84314

Equilateral Triangle

Length = n
Perimeter 244333860
Area 2.8722711674903E+15
Altitude 70533109.92157

Triangular Pyramid

Length = n
Surface area 2.8722711674903E+15
Volume 6.3667963082902E+22
Height 38393362.062108