81761640 (number)

81761640 is an even 8-digits composite number following 81761639 and preceding 81761641. In scientific notation, it is written as 8.1761640 × 10^7. The sum of its digits is 33. It has a total of 7 prime factors and 64 positive divisors. There are 21537792 positive integers (up to 81761640) that are relatively prime to 81761640.

Interesting facts

Basic properties

Name

Name eighty-one million seven hundred sixty-one thousand six hundred forty

Notation

Scientific notation 8.1761640 × 10^7
Engineering notation 8.1761640 × 10^6

Prime Factorization of 81761640

Prime Factorization 2 × 2 × 2 × 3 × 5 × 83 × 8209

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 20440410
Product of the distinct prime numbers

The prime factorization of 81761640 is 2 × 2 × 2 × 3 × 5 × 83 × 8209. Since it has a total of 7 prime factors.

Most popular turbo-numbers

3, 10, 86, 58, 114, 544, 4377, 5, 99900, 17229, 826043, 597744, 3361531, 3871868, 6840904, 91850535, 75306686, 835619262, 1200237894, 6864114448

Basic calculations (n = 81761640)

Multiplication

n×y
n×2 163523280
n×3 245284920
n×4 327046560
n×5 408808200

Division

n÷y
n÷2 40880820
n÷3 27253880
n÷3 20440410
n÷5 16352328

Exponentiation

ny
n2 6684965775489600
n3 5.465737651479E+23
n4 4.4688767419467E+31
n5 3.6538269137942E+39

Nth Root

y√n
2√n 9042.2143305719
3√n 434.02678450366
4√n 95.090558577452
5√n 38.23929870021

Divisors of 81761640

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 83, 120, 166, 249, 332, 415, 498, 664, 830, 996, 1245, 1660, 1992, 2490, 3320, 4980, 8209, 9960, 16418, 24627, 32836, 41045, 49254, 65672, 82090, 98508, 123135, 164180, 197016, 246270, 328360, 492540, 681347, 985080, 1362694, 2044041, 2725388, 3406735, 4088082, 5450776, 6813470, 8176164, 10220205, 13626940, 16352328, 20440410, 27253880, 40880820, 81761640

64 divisors

τ Total Divisors 64
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81761639
Sum of the proper positive divisors of n
A Arithmetic Mean 0.015625
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 64
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81761640 can be divided by 64 positive divisors. The sum of these divisors (counting 81761640) is 1, the average is 0.015625.

Base conversion 81761640

Base System Value
2 Binary 100110111111001010101101000
3 Ternary 12200211220212220
4 Quaternary 10313321111220
5 Quinary 131412333030
6 Senary 12040234040
8 Octal 467712550
10 Decimal 81761640
12 Duodecimal 2346b920
16 Hexadecimal 4df9568
20 Vigesimal 15b0420
36 Base36 1cofoo

Cryptographic Hash Functions

md5 e901783dbc9c460f91e471c6486f4a38
sha1 ee440df13897f874b1b1647931bc3c7b2b041d26
sha256 54b5cde403f5aa3632253a37b403b21ff6d6ee1a28cf4fcd16b4c8f82fa745b7
sha512 2dc0a9c49bc59e9b4b7f24ec70c8916b2c87a0a1ca0f5659914d7ff2550c892148b8a2321c2629d8f8800ec84c8e77bc929724a202637d6b5a99b87423264b2e
ripemd-160 c4966e0352774c3e679e3434e9c72229b81bae07

81761640 as geometric shapes

Circle

Radius = n
Diameter 163523280
Circumference 513723535.13891
Area 2.1001439369777E+16

Sphere

Radius = n
Volume 2.2894828336447E+24
Surface area 8.4005757479109E+16
Circumference 513723535.13891

Square

Length = n
Perimeter 327046560
Area 6684965775489600
Diagonal 115628420.16987

Cube

Length = n
Surface area 40109794652937600
Volume 5.465737651479E+23
Space diagonal 141615314.59016

Equilateral Triangle

Length = n
Perimeter 245284920
Area 2.8946750925018E+15
Altitude 70807657.295078

Triangular Pyramid

Length = n
Surface area 2.8946750925018E+15
Volume 6.4414335959124E+22
Height 38542806.723289