81738290 (number)

81738290 is an even 8-digits composite number following 81738289 and preceding 81738291. In scientific notation, it is written as 8.1738290 × 10^7. The sum of its digits is 38. It has a total of 4 prime factors and 16 positive divisors. There are 32371200 positive integers (up to 81738290) that are relatively prime to 81738290.

Interesting facts

Basic properties

Name

Name eighty-one million seven hundred thirty-eight thousand two hundred ninety

Notation

Scientific notation 8.1738290 × 10^7
Engineering notation 8.1738290 × 10^6

Prime Factorization of 81738290

Prime Factorization 2 × 5 × 101 × 80929

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81738290
Product of the distinct prime numbers

The prime factorization of 81738290 is 2 × 5 × 101 × 80929. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 4, 9, 39, 503, 757, 4410, 7024, 40886, 53767, 366804, 163429, 799038, 8108202, 90084628, 28012304, 622343907, 978093997, 8027009563, 5596403038

Basic calculations (n = 81738290)

Multiplication

n×y
n×2 163476580
n×3 245214870
n×4 326953160
n×5 408691450

Division

n÷y
n÷2 40869145
n÷3 27246096.666667
n÷3 20434572.5
n÷5 16347658

Exponentiation

ny
n2 6681148052124100
n3 5.4610561701745E+23
n4 4.4637739294402E+31
n5 3.6486124793902E+39

Nth Root

y√n
2√n 9040.9230723417
3√n 433.9854632095
4√n 95.083768711288
5√n 38.237114327097

Divisors of 81738290

1, 2, 5, 10, 101, 202, 505, 1010, 80929, 161858, 404645, 809290, 8173829, 16347658, 40869145, 81738290

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 -81738289
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 81738290 can be divided by 16 positive divisors. The sum of these divisors (counting 81738290) is 1, the average is 0.0625.

Base conversion 81738290

Base System Value
2 Binary 100110111110011101000110010
3 Ternary 12200210201212002
4 Quaternary 10313303220302
5 Quinary 131411111130
6 Senary 12035534002
8 Octal 467635062
10 Decimal 81738290
12 Duodecimal 2345a302
16 Hexadecimal 4df3a32
20 Vigesimal 15ah5ea
36 Base36 1cnxo2

Cryptographic Hash Functions

md5 767d86b2a7ea35c38ebf26bf1d43af30
sha1 502d3380b741d2947e0cd77472285f1d633d70b2
sha256 b05d8e33c54c3c19f555c399b81e80870652386b4fe61a64c52af1b729c9f199
sha512 d7aaf0d0e48da1c6774f9eb4e28814d1bd3a15b684e5e7287c488cf77ad2aa250aa79557afedb99e5fea2da68003f0002df5dc21f17cab010f2b944e62d170e6
ripemd-160 ed0f6c4820306474ae7a52cc3e4fb535ea363f45

81738290 as geometric shapes

Circle

Radius = n
Diameter 163476580
Circumference 513576822.76198
Area 2.0989445638099E+16

Sphere

Radius = n
Volume 2.2875218593415E+24
Surface area 8.3957782552395E+16
Circumference 513576822.76198

Square

Length = n
Perimeter 326953160
Area 6681148052124100
Diagonal 115595398.28319

Cube

Length = n
Surface area 40086888312744600
Volume 5.4610561701745E+23
Space diagonal 141574871.2038

Equilateral Triangle

Length = n
Perimeter 245214870
Area 2.8930219697922E+15
Altitude 70787435.6019

Triangular Pyramid

Length = n
Surface area 2.8930219697922E+15
Volume 6.4359164172851E+22
Height 38531799.427728