81445824 (number)

81445824 is an even 8-digits composite number following 81445823 and preceding 81445825. In scientific notation, it is written as 8.1445824 × 10^7. The sum of its digits is 36. It has a total of 10 prime factors and 84 positive divisors. There are 27143424 positive integers (up to 81445824) that are relatively prime to 81445824.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred forty-five thousand eight hundred twenty-four

Notation

Scientific notation 8.1445824 × 10^7
Engineering notation 8.1445824 × 10^6

Prime Factorization of 81445824

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 9 × 3 × 9 × 5237

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 10
Total number of prime factors
rad Radical 282798
Product of the distinct prime numbers

The prime factorization of 81445824 is 2 × 2 × 2 × 2 × 2 × 2 × 9 × 3 × 9 × 5237. Since it has a total of 10 prime factors.

Most popular turbo-numbers

6, 4, 65, 42, 701, 482, 537, 4912, 41317, 16060, 73104, 897857, 3157479, 6242641, 56290751, 69992426, 793381042, 771855965, 7684300399, 893635533

Basic calculations (n = 81445824)

Multiplication

n×y
n×2 162891648
n×3 244337472
n×4 325783296
n×5 407229120

Division

n÷y
n÷2 40722912
n÷3 27148608
n÷3 20361456
n÷5 16289164.8

Exponentiation

ny
n2 6633422247038976
n3 5.4026454085002E+23
n4 4.4002290707512E+31
n5 3.5838028245608E+39

Nth Root

y√n
2√n 9024.7340127009
3√n 433.46723330836
4√n 94.998600056532
5√n 38.209712002271

Divisors of 81445824

1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 48, 54, 64, 72, 81, 96, 108, 144, 162, 192, 216, 243, 288, 324, 432, 486, 576, 648, 864, 972, 1296, 1728, 1944, 2592, 3888, 5184, 5237, 7776, 10474, 15552, 15711, 20948, 31422, 41896, 47133, 62844, 83792, 94266, 125688, 141399, 167584, 188532, 251376, 282798, 335168, 377064, 424197, 502752, 565596, 754128, 848394, 1005504, 1131192, 1272591, 1508256, 1696788, 2262384, 2545182, 3016512, 3393576, 4524768, 5090364, 6787152, 9049536, 10180728, 13574304, 20361456, 27148608, 40722912, 81445824

84 divisors

τ Total Divisors 84
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81445823
Sum of the proper positive divisors of n
A Arithmetic Mean 0.011904761904762
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 84
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81445824 can be divided by 84 positive divisors. The sum of these divisors (counting 81445824) is 1, the average is 0.011904761904762.

Base conversion 81445824

Base System Value
2 Binary 100110110101100001111000000
3 Ternary 12200020212200000
4 Quaternary 10312230033000
5 Quinary 131322231244
6 Senary 12025400000
8 Octal 466541700
10 Decimal 81445824
12 Duodecimal 23339000
16 Hexadecimal 4dac3c0
20 Vigesimal 1590eb4
36 Base36 1cho00

Cryptographic Hash Functions

md5 11fcbbd4b44a3fcee57d51f8ae575ad7
sha1 9718c5163e61e6594d3adbc240333bc28b25b59b
sha256 3a7f24a037035aad7d90909f25ef772aa11eab22ddbcc299404694d7dfc58c8c
sha512 ce08022b62850a1425c70bc5b979d3889946efa40ca0592bb737a5b7125ae19566d925206d3d860e3c467457dfd24ab048979ebd68126d8099ff642ac430f41f
ripemd-160 4f0a247366ecf0086b810e0013b69be1f8b3bb15

81445824 as geometric shapes

Circle

Radius = n
Diameter 162891648
Circumference 511739204.68793
Area 2.0839510599457E+16

Sphere

Radius = n
Volume 2.263054816706E+24
Surface area 8.3358042397827E+16
Circumference 511739204.68793

Square

Length = n
Perimeter 325783296
Area 6633422247038976
Diagonal 115181788.89945

Cube

Length = n
Surface area 39800533482233856
Volume 5.4026454085002E+23
Space diagonal 141068305.23231

Equilateral Triangle

Length = n
Perimeter 244337472
Area 2.8723560899823E+15
Altitude 70534152.616156

Triangular Pyramid

Length = n
Surface area 2.8723560899823E+15
Volume 6.3670786744948E+22
Height 38393929.633151