81738280 (number)

81738280 is an even 8-digits composite number following 81738279 and preceding 81738281. In scientific notation, it is written as 8.1738280 × 10^7. The sum of its digits is 37. It has a total of 6 prime factors and 32 positive divisors. There are 30180096 positive integers (up to 81738280) that are relatively prime to 81738280.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1738280 × 10^7
Engineering notation 8.1738280 × 10^6

Prime Factorization of 81738280

Prime Factorization 2 × 2 × 2 × 5 × 13 × 157189

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 20434570
Product of the distinct prime numbers

The prime factorization of 81738280 is 2 × 2 × 2 × 5 × 13 × 157189. Since it has a total of 6 prime factors.

Most popular turbo-numbers

4, 5, 62, 90, 589, 569, 3282, 1002, 87172, 85400, 931242, 246815, 665480, 139482, 97868921, 78614918, 438587031, 194759758, 2477058452, 1336302054

Basic calculations (n = 81738280)

Multiplication

n×y
n×2 163476560
n×3 245214840
n×4 326953120
n×5 408691400

Division

n÷y
n÷2 40869140
n÷3 27246093.333333
n÷3 20434570
n÷5 16347656

Exponentiation

ny
n2 6681146417358400
n3 5.4610541658304E+23
n4 4.4637717450181E+31
n5 3.6486102475038E+39

Nth Root

y√n
2√n 9040.9225193008
3√n 433.98544551133
4√n 95.083765803111
5√n 38.237113391498

Divisors of 81738280

1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 157189, 314378, 628756, 785945, 1257512, 1571890, 2043457, 3143780, 4086914, 6287560, 8173828, 10217285, 16347656, 20434570, 40869140, 81738280

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81738279
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81738280 can be divided by 32 positive divisors. The sum of these divisors (counting 81738280) is 1, the average is 0.03125.

Base conversion 81738280

Base System Value
2 Binary 100110111110011101000101000
3 Ternary 12200210201211201
4 Quaternary 10313303220220
5 Quinary 131411111110
6 Senary 12035533544
8 Octal 467635050
10 Decimal 81738280
12 Duodecimal 2345a2b4
16 Hexadecimal 4df3a28
20 Vigesimal 15ah5e0
36 Base36 1cnxns

Cryptographic Hash Functions

md5 7dd81848b7b3c472b870d9c3ceb76a74
sha1 998a56483017182f76adfd658ed32f70b9041f56
sha256 b600c71e8ff4918bb7d428d0835c025f07761e937c6a57fac538c0274fcfa58a
sha512 c4d04d5952047cf342a658c9cd4a0e2e935e353462cc6b3573d67616c74de57d2c76550396a35cc1f52db45f3b94198ec020b0617b3d4bd08f688a246cc88cde
ripemd-160 3a09b5c99ccb166184aa4dc3a687304fb29e379e

81738280 as geometric shapes

Circle

Radius = n
Diameter 163476560
Circumference 513576759.93013
Area 2.0989440502331E+16

Sphere

Radius = n
Volume 2.2875210197638E+24
Surface area 8.3957762009324E+16
Circumference 513576759.93013

Square

Length = n
Perimeter 326953120
Area 6681146417358400
Diagonal 115595384.14105

Cube

Length = n
Surface area 40086878504150400
Volume 5.4610541658304E+23
Space diagonal 141574853.88329

Equilateral Triangle

Length = n
Perimeter 245214840
Area 2.8930212619179E+15
Altitude 70787426.941646

Triangular Pyramid

Length = n
Surface area 2.8930212619179E+15
Volume 6.4359140551428E+22
Height 38531794.713683