81409946 (number)

81409946 is an even 8-digits composite number following 81409945 and preceding 81409947. In scientific notation, it is written as 8.1409946 × 10^7. The sum of its digits is 41. It has a total of 4 prime factors and 16 positive divisors. There are 38219328 positive integers (up to 81409946) that are relatively prime to 81409946.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred nine thousand nine hundred forty-six

Notation

Scientific notation 8.1409946 × 10^7
Engineering notation 8.1409946 × 10^6

Prime Factorization of 81409946

Prime Factorization 2 × 19 × 113 × 18959

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81409946
Product of the distinct prime numbers

The prime factorization of 81409946 is 2 × 19 × 113 × 18959. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 10, 13, 21, 885, 58, 2309, 5851, 38963, 99592, 173555, 160905, 2918494, 4878652, 45979538, 90809484, 428725423, 785216347, 9965367912, 9446039683

Basic calculations (n = 81409946)

Multiplication

n×y
n×2 162819892
n×3 244229838
n×4 325639784
n×5 407049730

Division

n÷y
n÷2 40704973
n÷3 27136648.666667
n÷3 20352486.5
n÷5 16281989.2

Exponentiation

ny
n2 6627579307722916
n3 5.3955087355244E+23
n4 4.3924807480157E+31
n5 3.57591620502E+39

Nth Root

y√n
2√n 9022.746034329
3√n 433.40357454394
4√n 94.988136282006
5√n 38.206345028738

Divisors of 81409946

1, 2, 19, 38, 113, 226, 2147, 4294, 18959, 37918, 360221, 720442, 2142367, 4284734, 40704973, 81409946

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 -81409945
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 81409946 can be divided by 16 positive divisors. The sum of these divisors (counting 81409946) is 1, the average is 0.0625.

Base conversion 81409946

Base System Value
2 Binary 100110110100011011110011010
3 Ternary 12200012001110012
4 Quaternary 10312203132122
5 Quinary 131320104241
6 Senary 12024521522
8 Octal 466433632
10 Decimal 81409946
12 Duodecimal 233202a2
16 Hexadecimal 4da379a
20 Vigesimal 158g4h6
36 Base36 1cgwbe

Cryptographic Hash Functions

md5 3038afa6bc31121bbfd53089e7888bf0
sha1 e0bb3a70c8d0eba1d27da148083c74ca9f5fb007
sha256 c5698a545134776d246e0dfd77d4b735c907597a44dfab22578301d464a22abc
sha512 a91a65c547aa1c6135f644ad251057c99345f5769416e7261070601e5788590af2bcccf17b1bb5d99f6776a38e45f314214a5f2ee4b12809a2f27040bce6e72e
ripemd-160 64de241328006d3263be564f6d04d95561833f59

81409946 as geometric shapes

Circle

Radius = n
Diameter 162819892
Circumference 511513776.56548
Area 2.0821154464226E+16

Sphere

Radius = n
Volume 2.2600654141204E+24
Surface area 8.3284617856904E+16
Circumference 511513776.56548

Square

Length = n
Perimeter 325639784
Area 6627579307722916
Diagonal 115131049.74526

Cube

Length = n
Surface area 39765475846337496
Volume 5.3955087355244E+23
Space diagonal 141006162.71344

Equilateral Triangle

Length = n
Perimeter 244229838
Area 2.8698260230421E+15
Altitude 70503081.356719

Triangular Pyramid

Length = n
Surface area 2.8698260230421E+15
Volume 6.3586680247343E+22
Height 38377016.581754