81639448 (number)

81639448 is an even 8-digits composite number following 81639447 and preceding 81639449. In scientific notation, it is written as 8.1639448 × 10^7. The sum of its digits is 43. It has a total of 6 prime factors and 32 positive divisors. There are 36744480 positive integers (up to 81639448) that are relatively prime to 81639448.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1639448 × 10^7
Engineering notation 8.1639448 × 10^6

Prime Factorization of 81639448

Prime Factorization 2 × 2 × 2 × 11 × 103 × 9007

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 20409862
Product of the distinct prime numbers

The prime factorization of 81639448 is 2 × 2 × 2 × 11 × 103 × 9007. Since it has a total of 6 prime factors.

Most popular turbo-numbers

6, 7, 21, 18, 463, 473, 9272, 1532, 79193, 29114, 524042, 982354, 6421618, 9597488, 37359007, 21530032, 942927087, 536669942, 735434609, 3878349642

Basic calculations (n = 81639448)

Multiplication

n×y
n×2 163278896
n×3 244918344
n×4 326557792
n×5 408197240

Division

n÷y
n÷2 40819724
n÷3 27213149.333333
n÷3 20409862
n÷5 16327889.6

Exponentiation

ny
n2 6664999469744704
n3 5.4412687763025E+23
n4 4.4422217931697E+31
n5 3.6266053508795E+39

Nth Root

y√n
2√n 9035.4550521819
3√n 433.81046039081
4√n 95.055010663205
5√n 38.227862207208

Divisors of 81639448

1, 2, 4, 8, 11, 22, 44, 88, 103, 206, 412, 824, 1133, 2266, 4532, 9007, 9064, 18014, 36028, 72056, 99077, 198154, 396308, 792616, 927721, 1855442, 3710884, 7421768, 10204931, 20409862, 40819724, 81639448

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81639447
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81639448 can be divided by 32 positive divisors. The sum of these divisors (counting 81639448) is 1, the average is 0.03125.

Base conversion 81639448

Base System Value
2 Binary 100110111011011100000011000
3 Ternary 12200121201021021
4 Quaternary 10313123200120
5 Quinary 131344430243
6 Senary 12033452224
8 Octal 467334030
10 Decimal 81639448
12 Duodecimal 23411074
16 Hexadecimal 4ddb818
20 Vigesimal 15a4ic8
36 Base36 1clteg

Cryptographic Hash Functions

md5 0230a17d4a780fd3248f548c3df66c1c
sha1 620b93cb2965044cbe6586b03bc83e1d96db3632
sha256 584d521bc91b7c6ff761a4f1d5ba16726c9b7daab23b8fc52be6340e1cfe7028
sha512 2bb3f54d58931b3f04f6fb38897318b8b8c30bd00dde571870e61c93aa57086cc159c165f61ce68884c9adc4c06f923f38165f9a319cf39f89f5c1b5134bed67
ripemd-160 ec6d6a6075731be70b496d35beb453a19641ec87

81639448 as geometric shapes

Circle

Radius = n
Diameter 163278896
Circumference 512955780.15985
Area 2.093871337033E+16

Sphere

Radius = n
Volume 2.2792333351786E+24
Surface area 8.3754853481319E+16
Circumference 512955780.15985

Square

Length = n
Perimeter 326557792
Area 6664999469744704
Diagonal 115455614.58625

Cube

Length = n
Surface area 39989996818468224
Volume 5.4412687763025E+23
Space diagonal 141403671.83788

Equilateral Triangle

Length = n
Perimeter 244918344
Area 2.8860294285044E+15
Altitude 70701835.918939

Triangular Pyramid

Length = n
Surface area 2.8860294285044E+15
Volume 6.4125967499702E+22
Height 38485204.862084