81291736 (number)

81291736 is an even 8-digits composite number following 81291735 and preceding 81291737. In scientific notation, it is written as 8.1291736 × 10^7. The sum of its digits is 37. It has a total of 5 prime factors and 16 positive divisors. There are 40619040 positive integers (up to 81291736) that are relatively prime to 81291736.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred ninety-one thousand seven hundred thirty-six

Notation

Scientific notation 8.1291736 × 10^7
Engineering notation 8.1291736 × 10^6

Prime Factorization of 81291736

Prime Factorization 2 × 2 × 2 × 2311 × 4397

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 20322934
Product of the distinct prime numbers

The prime factorization of 81291736 is 2 × 2 × 2 × 2311 × 4397. Since it has a total of 5 prime factors.

Most popular turbo-numbers

9, 6, 64, 66, 118, 819, 9830, 9069, 24471, 9873, 224404, 417276, 1015326, 6477484, 1326266, 99453373, 149162884, 933262331, 1236329474, 9017552709

Basic calculations (n = 81291736)

Multiplication

n×y
n×2 162583472
n×3 243875208
n×4 325166944
n×5 406458680

Division

n÷y
n÷2 40645868
n÷3 27097245.333333
n÷3 20322934
n÷5 16258347.2

Exponentiation

ny
n2 6608346341893696
n3 5.3720394622179E+23
n4 4.367024137442E+31
n5 3.5500297328656E+39

Nth Root

y√n
2√n 9016.1929881741
3√n 433.19370070475
4√n 94.953635992384
5√n 38.195243197265

Divisors of 81291736

1, 2, 4, 8, 2311, 4397, 4622, 8794, 9244, 17588, 18488, 35176, 10161467, 20322934, 40645868, 81291736

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 -81291735
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 81291736 can be divided by 16 positive divisors. The sum of these divisors (counting 81291736) is 1, the average is 0.0625.

Base conversion 81291736

Base System Value
2 Binary 100110110000110100111011000
3 Ternary 12122222001022001
4 Quaternary 10312012213120
5 Quinary 131302313421
6 Senary 12022210344
8 Octal 466064730
10 Decimal 81291736
12 Duodecimal 232839b4
16 Hexadecimal 4d869d8
20 Vigesimal 158196g
36 Base36 1ced3s

Cryptographic Hash Functions

md5 c707d6f1751aae23bb056ee3f36b9c48
sha1 a6db4ba23a3e05b45d3d241d559bc1e7f105ab5b
sha256 dcf6e67ae9da17c82fc75fb0da81d2b8b9137847228d2ea4f71534a03537b37f
sha512 d0031f6500bd4d485826103c1216528eb5bbb03846feb456a8dc1b3e030711b2ef56747482b4cb6b2e664c39e6223c66bd3fc5b233614c8d6fd62d7a26818500
ripemd-160 ffdabcf2d940c1e3a0a533ed660a9ef9aa8e58b3

81291736 as geometric shapes

Circle

Radius = n
Diameter 162583472
Circumference 510771041.23032
Area 2.076073232007E+16

Sphere

Radius = n
Volume 2.2502346279064E+24
Surface area 8.3042929280281E+16
Circumference 510771041.23032

Square

Length = n
Perimeter 325166944
Area 6608346341893696
Diagonal 114963875.56005

Cube

Length = n
Surface area 39650078051362176
Volume 5.3720394622179E+23
Space diagonal 140801416.98748

Equilateral Triangle

Length = n
Perimeter 243875208
Area 2.861497904543E+15
Altitude 70400708.493738

Triangular Pyramid

Length = n
Surface area 2.861497904543E+15
Volume 6.3310092208933E+22
Height 38321291.853351