81011640 (number)

81011640 is an even 8-digits composite number following 81011639 and preceding 81011641. In scientific notation, it is written as 8.1011640 × 10^7. The sum of its digits is 21. It has a total of 5 prime factors and 16 positive divisors. There are 21603072 positive integers (up to 81011640) that are relatively prime to 81011640.

Interesting facts

Basic properties

Name

Name eighty-one million eleven thousand six hundred forty

Notation

Scientific notation 8.1011640 × 10^7
Engineering notation 8.1011640 × 10^6

Prime Factorization of 81011640

Prime Factorization 2 × 2 × 2 × 15 × 675097

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 20252910
Product of the distinct prime numbers

The prime factorization of 81011640 is 2 × 2 × 2 × 15 × 675097. Since it has a total of 5 prime factors.

Most popular turbo-numbers

10, 10, 24, 99, 27, 647, 4615, 61, 87729, 94762, 619839, 37888, 2352970, 4848251, 50103792, 17227118, 7083008, 526231758, 7230013533, 8061332195

Basic calculations (n = 81011640)

Multiplication

n×y
n×2 162023280
n×3 243034920
n×4 324046560
n×5 405058200

Division

n÷y
n÷2 40505820
n÷3 27003880
n÷3 20252910
n÷5 16202328

Exponentiation

ny
n2 6562885815489600
n3 5.3167014304555E+23
n4 4.3071470227155E+31
n5 3.489290440313E+39

Nth Root

y√n
2√n 9000.6466434362
3√n 432.69559576001
4√n 94.87173785399
5√n 38.168886003663

Divisors of 81011640

1, 2, 4, 8, 15, 30, 60, 120, 675097, 1350194, 2700388, 5400776, 10126455, 20252910, 40505820, 81011640

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 -81011639
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 81011640 can be divided by 16 positive divisors. The sum of these divisors (counting 81011640) is 1, the average is 0.0625.

Base conversion 81011640

Base System Value
2 Binary 100110101000010001110111000
3 Ternary 12122102211002010
4 Quaternary 10311002032320
5 Quinary 131214333030
6 Senary 12012205520
8 Octal 465021670
10 Decimal 81011640
12 Duodecimal 231698a0
16 Hexadecimal 4d423b8
20 Vigesimal 1566920
36 Base36 1c8czc

Cryptographic Hash Functions

md5 c9105631d6856f8a6034e02439be3887
sha1 ae875e1796854bb9c9cd677b6c012b0f010ccef0
sha256 c49651d3c3dda3ed66e829fda1ee6fb8d3b70a31fa7fa99cf6896b5164be48e1
sha512 2a2c3a983d52fe591d36c2eab066246c96837e0806bf3268500a64747e5b3022b96df0828855288ff79334939918d8a8e85e0651336baad2f591a1ea8cdf26c7
ripemd-160 925ba86fe6630d570c1ab8f9e247cb7ca61b6b35

81011640 as geometric shapes

Circle

Radius = n
Diameter 162023280
Circumference 509011146.15852
Area 2.0617913864291E+16

Sphere

Radius = n
Volume 2.2270546873666E+24
Surface area 8.2471655457163E+16
Circumference 509011146.15852

Square

Length = n
Perimeter 324046560
Area 6562885815489600
Diagonal 114567759.99809

Cube

Length = n
Surface area 39377314892937600
Volume 5.3167014304555E+23
Space diagonal 140316276.48448

Equilateral Triangle

Length = n
Perimeter 243034920
Area 2.8418129191753E+15
Altitude 70158138.24224

Triangular Pyramid

Length = n
Surface area 2.8418129191753E+15
Volume 6.2657927250322E+22
Height 38189253.332696