81011749 (number)

81011749 is an odd 8-digits composite number following 81011748 and preceding 81011750. In scientific notation, it is written as 8.1011749 × 10^7. The sum of its digits is 31. It has a total of 4 prime factors and 16 positive divisors. There are 60318720 positive integers (up to 81011749) that are relatively prime to 81011749.

Interesting facts

Basic properties

Name

Name eighty-one million eleven thousand seven hundred forty-nine

Notation

Scientific notation 8.1011749 × 10^7
Engineering notation 8.1011749 × 10^6

Prime Factorization of 81011749

Prime Factorization 7 × 91 × 17 × 7481

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81011749
Product of the distinct prime numbers

The prime factorization of 81011749 is 7 × 91 × 17 × 7481. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 7, 31, 33, 989, 389, 8438, 962, 16137, 19909, 77393, 66477, 7096041, 1930288, 78163803, 47878788, 724126038, 917735709, 6560587694, 7882801945

Basic calculations (n = 81011749)

Multiplication

n×y
n×2 162023498
n×3 243035247
n×4 324046996
n×5 405058745

Division

n÷y
n÷2 40505874.5
n÷3 27003916.333333
n÷3 20252937.25
n÷5 16202349.8

Exponentiation

ny
n2 6562903476039001
n3 5.316722891121E+23
n4 4.3071702035805E+31
n5 3.4893139143274E+39

Nth Root

y√n
2√n 9000.6526985547
3√n 432.69578982183
4√n 94.871769766115
5√n 38.168896274795

Divisors of 81011749

1, 7, 17, 91, 119, 637, 1547, 7481, 10829, 52367, 127177, 680771, 890239, 4765397, 11573107, 81011749

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 -81011748
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 81011749 can be divided by 16 positive divisors. The sum of these divisors (counting 81011749) is 1, the average is 0.0625.

Base conversion 81011749

Base System Value
2 Binary 100110101000010010000100101
3 Ternary 12122102211020011
4 Quaternary 10311002100211
5 Quinary 131214333444
6 Senary 12012210221
8 Octal 465022045
10 Decimal 81011749
12 Duodecimal 23169971
16 Hexadecimal 4d42425
20 Vigesimal 1566979
36 Base36 1c8d2d

Cryptographic Hash Functions

md5 b4ef37ebee5d29703d31d9822636dbff
sha1 6681a69a59da879feaea78eb9292fb19b6371155
sha256 bd06291781d29bdfdc941999b97cee40edec8713fe3fcac44efcef64c0a5b40b
sha512 fe466418a77f11030999a99045bdf6bea4af30bbc56daee22c0d5cefec50847dc331a00c98955383bd94d44c3547d596f505a97e2376fd2161c9f2a1bc68846b
ripemd-160 f15e85da2e88e4658fddbadb29671f6c6093c683

81011749 as geometric shapes

Circle

Radius = n
Diameter 162023498
Circumference 509011831.02572
Area 2.0617969346543E+16

Sphere

Radius = n
Volume 2.2270636767891E+24
Surface area 8.2471877386172E+16
Circumference 509011831.02572

Square

Length = n
Perimeter 324046996
Area 6562903476039001
Diagonal 114567914.14737

Cube

Length = n
Surface area 39377420856234006
Volume 5.316722891121E+23
Space diagonal 140316465.27802

Equilateral Triangle

Length = n
Perimeter 243035247
Area 2.8418205664175E+15
Altitude 70158232.639009

Triangular Pyramid

Length = n
Surface area 2.8418205664175E+15
Volume 6.265818016669E+22
Height 38189304.715788