81409916 (number)

81409916 is an even 8-digits composite number following 81409915 and preceding 81409917. In scientific notation, it is written as 8.1409916 × 10^7. The sum of its digits is 38. It has a total of 6 prime factors and 48 positive divisors. There are 33680448 positive integers (up to 81409916) that are relatively prime to 81409916.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred nine thousand nine hundred sixteen

Notation

Scientific notation 8.1409916 × 10^7
Engineering notation 8.1409916 × 10^6

Prime Factorization of 81409916

Prime Factorization 2 × 2 × 7 × 179 × 37 × 439

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 40704958
Product of the distinct prime numbers

The prime factorization of 81409916 is 2 × 2 × 7 × 179 × 37 × 439. Since it has a total of 6 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81409916)

Multiplication

n×y
n×2 162819832
n×3 244229748
n×4 325639664
n×5 407049580

Division

n÷y
n÷2 40704958
n÷3 27136638.666667
n÷3 20352479
n÷5 16281983.2

Exponentiation

ny
n2 6627574423127056
n3 5.3955027707052E+23
n4 4.3924742734088E+31
n5 3.5759096163037E+39

Nth Root

y√n
2√n 9022.7443718638
3√n 433.40352130675
4√n 94.988127531096
5√n 38.206342212889

Divisors of 81409916

48 divisors

τ Total Divisors 48
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81409915
Sum of the proper positive divisors of n
A Arithmetic Mean 0.020833333333333
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 48
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81409916 can be divided by 48 positive divisors. The sum of these divisors (counting 81409916) is 1, the average is 0.020833333333333.

Base conversion 81409916

Base System Value
2 Binary 100110110100011011101111100
3 Ternary 12200012001102002
4 Quaternary 10312203131330
5 Quinary 131320104131
6 Senary 12024521432
8 Octal 466433574
10 Decimal 81409916
12 Duodecimal 23320278
16 Hexadecimal 4da377c
20 Vigesimal 158g4fg
36 Base36 1cgwak

Cryptographic Hash Functions

md5 c7f6c7347fc5e403c4b0c7d8aca37c32
sha1 46faccd68f19a59749b78e094a870896acfa83b8
sha256 e49b1b801e44c2605dd4161a0595a4e34122756dddebdd2b960df5205d12056f
sha512 0315d36adce1a9ecab2b4d6a5813d84635267f4bb46f0f454f91b267862f6f91fd04d05e474c9580a1b3fd233e43495ceb831f85e15786c49fe82ddb1061274a
ripemd-160 43aa0407d11ce2adbf7e6bf7ca6ebbd1f66cefde

81409916 as geometric shapes

Circle

Radius = n
Diameter 162819832
Circumference 511513588.06992
Area 2.0821139118816E+16

Sphere

Radius = n
Volume 2.2600629155828E+24
Surface area 8.3284556475262E+16
Circumference 511513588.06992

Square

Length = n
Perimeter 325639664
Area 6627574423127056
Diagonal 115131007.31885

Cube

Length = n
Surface area 39765446538762336
Volume 5.3955027707052E+23
Space diagonal 141006110.75191

Equilateral Triangle

Length = n
Perimeter 244229748
Area 2.86982390795E+15
Altitude 70503055.375957

Triangular Pyramid

Length = n
Surface area 2.86982390795E+15
Volume 6.3586609951274E+22
Height 38377002.439618