81808045 (number)

81808045 is an odd 8-digits composite number following 81808044 and preceding 81808046. In scientific notation, it is written as 8.1808045 × 10^7. The sum of its digits is 34. It has a total of 4 prime factors and 16 positive divisors. There are 58965760 positive integers (up to 81808045) that are relatively prime to 81808045.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1808045 × 10^7
Engineering notation 8.1808045 × 10^6

Prime Factorization of 81808045

Prime Factorization 11 × 5 × 113 × 13163

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81808045
Product of the distinct prime numbers

The prime factorization of 81808045 is 11 × 5 × 113 × 13163. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 2, 43, 96, 483, 434, 15, 1037, 25738, 51049, 373328, 497750, 2953054, 8866060, 22960151, 61435850, 957230565, 396001747, 5795521155, 7073770868

Basic calculations (n = 81808045)

Multiplication

n×y
n×2 163616090
n×3 245424135
n×4 327232180
n×5 409040225

Division

n÷y
n÷2 40904022.5
n÷3 27269348.333333
n÷3 20452011.25
n÷5 16361609

Exponentiation

ny
n2 6692556226722025
n3 5.4750494096071E+23
n4 4.4790308847836E+31
n5 3.6642076017876E+39

Nth Root

y√n
2√n 9044.7799862683
3√n 434.10888169779
4√n 95.104048211779
5√n 38.24363836839

Divisors of 81808045

1, 5, 11, 55, 113, 565, 1243, 6215, 13163, 65815, 144793, 723965, 1487419, 7437095, 16361609, 81808045

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 -81808044
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 81808045 can be divided by 16 positive divisors. The sum of these divisors (counting 81808045) is 1, the average is 0.0625.

Base conversion 81808045

Base System Value
2 Binary 100111000000100101010101101
3 Ternary 12200221021112121
4 Quaternary 10320010222231
5 Quinary 131420324140
6 Senary 12041232541
8 Octal 470045255
10 Decimal 81808045
12 Duodecimal 23492751
16 Hexadecimal 4e04aad
20 Vigesimal 15b6025
36 Base36 1cpfhp

Cryptographic Hash Functions

md5 795681e8fd7775070b7abc4a7ef81ac9
sha1 4767abf2da5bf688c2c64dced8f9ae553265ecff
sha256 4328089d8972520b9882405e70de7344fd2cbb6486550f33c74d83d237beef5e
sha512 cc9ed5419dd739c13f42020b1b55171a257cf6a199ae6bb31f47f40211384b194ef4a02696e5e8985826517c97cf4e3c80a54a5a5d1e3528cfba2cf2c61f3579
ripemd-160 dfeb0551d8d9190787153bd4eb1a1b26c0c24de0

81808045 as geometric shapes

Circle

Radius = n
Diameter 163616090
Circumference 514015106.35309
Area 2.1025285475607E+16

Sphere

Radius = n
Volume 2.2933833337684E+24
Surface area 8.4101141902426E+16
Circumference 514015106.35309

Square

Length = n
Perimeter 327232180
Area 6692556226722025
Diagonal 115694046.75023

Cube

Length = n
Surface area 40155337360332150
Volume 5.4750494096071E+23
Space diagonal 141695690.40788

Equilateral Triangle

Length = n
Perimeter 245424135
Area 2.8979618542985E+15
Altitude 70847845.203941

Triangular Pyramid

Length = n
Surface area 2.8979618542985E+15
Volume 6.4524076081076E+22
Height 38564682.250076