81388275 (number)

81388275 is an odd 8-digits composite number following 81388274 and preceding 81388276. In scientific notation, it is written as 8.1388275 × 10^7. The sum of its digits is 42. It has a total of 5 prime factors and 24 positive divisors. There are 42606080 positive integers (up to 81388275) that are relatively prime to 81388275.

Interesting facts

Basic properties

Name

Name eighty-one million three hundred eighty-eight thousand two hundred seventy-five

Notation

Scientific notation 8.1388275 × 10^7
Engineering notation 8.1388275 × 10^6

Prime Factorization of 81388275

Prime Factorization 15 × 5 × 89 × 89 × 137

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 914475
Product of the distinct prime numbers

The prime factorization of 81388275 is 15 × 5 × 89 × 89 × 137. Since it has a total of 5 prime factors.

Most popular turbo-numbers

8, 7, 2, 84, 637, 779, 7238, 2330, 94411, 30386, 93766, 865048, 896860, 7668006, 33066800, 14769120, 701823388, 444265408, 3639610918, 2695081611

Basic calculations (n = 81388275)

Multiplication

n×y
n×2 162776550
n×3 244164825
n×4 325553100
n×5 406941375

Division

n÷y
n÷2 40694137.5
n÷3 27129425
n÷3 20347068.75
n÷5 16277655

Exponentiation

ny
n2 6624051307475625
n3 5.3912010942694E+23
n4 4.387805572407E+31
n5 3.5711592657359E+39

Nth Root

y√n
2√n 9021.5450450574
3√n 433.36511436863
4√n 94.981814285985
5√n 38.20431073706

Divisors of 81388275

1, 5, 15, 75, 89, 137, 445, 685, 1335, 2055, 6675, 7921, 10275, 12193, 39605, 60965, 118815, 182895, 594075, 914475, 1085177, 5425885, 16277655, 81388275

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 -81388274
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 81388275 can be divided by 24 positive divisors. The sum of these divisors (counting 81388275) is 1, the average is 0.041666666666667.

Base conversion 81388275

Base System Value
2 Binary 100110110011110001011110011
3 Ternary 12200010221201120
4 Quaternary 10312132023303
5 Quinary 131313411100
6 Senary 12024233323
8 Octal 466361363
10 Decimal 81388275
12 Duodecimal 2330b843
16 Hexadecimal 4d9e2f3
20 Vigesimal 158dadf
36 Base36 1cgflf

Cryptographic Hash Functions

md5 5cb97614748126a6224977c15f3e923e
sha1 a5be91fcbd7f625bc7451a9785278a5aba35d4e3
sha256 3515c70d4d51f48c564cbcf8df2096da187d42af6c8b0ba78e4aad3aecb5cd70
sha512 9477bf01a6eef090c2b3ac287e04b35bcb02dad1ea6949b146838332effacc19e4640a44d31578b69021e962ed91b056b4848b057b086fa9da70e9795b7d8730
ripemd-160 6a180213f13dd068fd122d35636d7452c94e03a9

81388275 as geometric shapes

Circle

Radius = n
Diameter 162776550
Circumference 511377613.65669
Area 2.0810070924567E+16

Sphere

Radius = n
Volume 2.2582610335709E+24
Surface area 8.3240283698269E+16
Circumference 511377613.65669

Square

Length = n
Perimeter 325553100
Area 6624051307475625
Diagonal 115100402.32315

Cube

Length = n
Surface area 39744307844853750
Volume 5.3912010942694E+23
Space diagonal 140968627.44039

Equilateral Triangle

Length = n
Perimeter 244164825
Area 2.8682983541227E+15
Altitude 70484313.720194

Triangular Pyramid

Length = n
Surface area 2.8682983541227E+15
Volume 6.3535914208303E+22
Height 38366800.774384