81738488 (number)

81738488 is an even 8-digits composite number following 81738487 and preceding 81738489. In scientific notation, it is written as 8.1738488 × 10^7. The sum of its digits is 47. It has a total of 5 prime factors and 16 positive divisors. There are 37725408 positive integers (up to 81738488) that are relatively prime to 81738488.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1738488 × 10^7
Engineering notation 8.1738488 × 10^6

Prime Factorization of 81738488

Prime Factorization 2 × 2 × 2 × 13 × 785947

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 20434622
Product of the distinct prime numbers

The prime factorization of 81738488 is 2 × 2 × 2 × 13 × 785947. Since it has a total of 5 prime factors.

Most popular turbo-numbers

7, 5, 56, 66, 849, 898, 9077, 8110, 84393, 86375, 850723, 767546, 7954552, 3567532, 97202614, 63906516, 792458040, 21818061, 263946662, 8097537443

Basic calculations (n = 81738488)

Multiplication

n×y
n×2 163476976
n×3 245215464
n×4 326953952
n×5 408692440

Division

n÷y
n÷2 40869244
n÷3 27246162.666667
n÷3 20434622
n÷5 16347697.6

Exponentiation

ny
n2 6681180420526144
n3 5.4610958562901E+23
n4 4.4638171811622E+31
n5 3.6486566709662E+39

Nth Root

y√n
2√n 9040.9340225444
3√n 433.985813633
4√n 95.083826293142
5√n 38.237132851931

Divisors of 81738488

1, 2, 4, 8, 13, 26, 52, 104, 785947, 1571894, 3143788, 6287576, 10217311, 20434622, 40869244, 81738488

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 -81738487
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 81738488 can be divided by 16 positive divisors. The sum of these divisors (counting 81738488) is 1, the average is 0.0625.

Base conversion 81738488

Base System Value
2 Binary 100110111110011101011111000
3 Ternary 12200210202010102
4 Quaternary 10313303223320
5 Quinary 131411112423
6 Senary 12035534532
8 Octal 467635370
10 Decimal 81738488
12 Duodecimal 2345a448
16 Hexadecimal 4df3af8
20 Vigesimal 15ah648
36 Base36 1cnxtk

Cryptographic Hash Functions

md5 06a9b9bd94aa5a4ca180cd220f961c77
sha1 d233cc3c4fab13b29f4da4414f65f69f13d7e30a
sha256 13336c71b5a2801df1b172bca44a82ed914c58b65c392307354eb8f909812c0d
sha512 4c8bfad4f3e0c8e7f7b46b4277497ac06b830463ce120396430914bcd9753dc3f6a1c75d33fb9bd37bd890ea5dc77aa5719463aef2e705998d26229b9fba9720
ripemd-160 e22d04f6cfac2e6b165af990b64d9a502a3843f4

81738488 as geometric shapes

Circle

Radius = n
Diameter 163476976
Circumference 513578066.83267
Area 2.0989547326433E+16

Sphere

Radius = n
Volume 2.2875384830228E+24
Surface area 8.3958189305732E+16
Circumference 513578066.83267

Square

Length = n
Perimeter 326953952
Area 6681180420526144
Diagonal 115595678.29747

Cube

Length = n
Surface area 40087082523156864
Volume 5.4610958562901E+23
Space diagonal 141575214.14986

Equilateral Triangle

Length = n
Perimeter 245215464
Area 2.8930359857214E+15
Altitude 70787607.074929

Triangular Pyramid

Length = n
Surface area 2.8930359857214E+15
Volume 6.4359631878208E+22
Height 38531892.765823