81808855 (number)

81808855 is an odd 8-digits composite number following 81808854 and preceding 81808856. In scientific notation, it is written as 8.1808855 × 10^7. The sum of its digits is 43. It has a total of 4 prime factors and 16 positive divisors. There are 62995968 positive integers (up to 81808855) that are relatively prime to 81808855.

Interesting facts

Basic properties

Name

Name eighty-one million eight hundred eight thousand eight hundred fifty-five

Notation

Scientific notation 8.1808855 × 10^7
Engineering notation 8.1808855 × 10^6

Prime Factorization of 81808855

Prime Factorization 29 × 5 × 433 × 1303

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81808855
Product of the distinct prime numbers

The prime factorization of 81808855 is 29 × 5 × 433 × 1303. Since it has a total of 4 prime factors.

Most popular turbo-numbers

8, 4, 13, 41, 48, 153, 3204, 7251, 41579, 32886, 257761, 127811, 3551606, 3608879, 62814171, 42261553, 330065073, 904569305, 7327740536, 3108281105

Basic calculations (n = 81808855)

Multiplication

n×y
n×2 163617710
n×3 245426565
n×4 327235420
n×5 409044275

Division

n÷y
n÷2 40904427.5
n÷3 27269618.333333
n÷3 20452213.75
n÷5 16361771

Exponentiation

ny
n2 6692688756411025
n3 5.4752120403336E+23
n4 4.4792082790191E+31
n5 3.6643890061307E+39

Nth Root

y√n
2√n 9044.8247633661
3√n 434.11031442988
4√n 95.10428362259
5√n 38.243714099877

Divisors of 81808855

1, 5, 29, 145, 433, 1303, 2165, 6515, 12557, 37787, 62785, 188935, 564199, 2820995, 16361771, 81808855

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 -81808854
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 81808855 can be divided by 16 positive divisors. The sum of these divisors (counting 81808855) is 1, the average is 0.0625.

Base conversion 81808855

Base System Value
2 Binary 100111000000100110111010111
3 Ternary 12200221022122121
4 Quaternary 10320010313113
5 Quinary 131420340410
6 Senary 12041240411
8 Octal 470046727
10 Decimal 81808855
12 Duodecimal 23493107
16 Hexadecimal 4e04dd7
20 Vigesimal 15b622f
36 Base36 1cpg47

Cryptographic Hash Functions

md5 4b02e4bb609b09fcd050ed708c9bc3d4
sha1 e25fa7fa319f2705e1a16c53fd125da3cc69b490
sha256 aadf5ccbe1948788082e6821d2f8121e386cdf36f71e1f72a28be31294b1c42e
sha512 2e2a08030f28b0305472f255269b11940d493a00b88652aafab8be3ba310d703440da6d7eef834a0da64b3bc4c3ea5e93a503efe92e1b28d8d68d637b617276b
ripemd-160 8d6146fa5d9d8ca62f401ceb46fd1539b9607283

81808855 as geometric shapes

Circle

Radius = n
Diameter 163617710
Circumference 514020195.73319
Area 2.1025701829904E+16

Sphere

Radius = n
Volume 2.2934514563678E+24
Surface area 8.4102807319616E+16
Circumference 514020195.73319

Square

Length = n
Perimeter 327235420
Area 6692688756411025
Diagonal 115695192.26321

Cube

Length = n
Surface area 40156132538466150
Volume 5.4752120403336E+23
Space diagonal 141697093.36904

Equilateral Triangle

Length = n
Perimeter 245426565
Area 2.8980192413372E+15
Altitude 70848546.684518

Triangular Pyramid

Length = n
Surface area 2.8980192413372E+15
Volume 6.4525992702569E+22
Height 38565064.087738