81645498 (number)

81645498 is an even 8-digits composite number following 81645497 and preceding 81645499. In scientific notation, it is written as 8.1645498 × 10^7. The sum of its digits is 45. It has a total of 5 prime factors and 32 positive divisors. There are 23385600 positive integers (up to 81645498) that are relatively prime to 81645498.

Interesting facts

Basic properties

Name

Name eighty-one million six hundred forty-five thousand four hundred ninety-eight

Notation

Scientific notation 8.1645498 × 10^7
Engineering notation 8.1645498 × 10^6

Prime Factorization of 81645498

Prime Factorization 2 × 9 × 319 × 59 × 241

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81645498
Product of the distinct prime numbers

The prime factorization of 81645498 is 2 × 9 × 319 × 59 × 241. Since it has a total of 5 prime factors.

Most popular turbo-numbers

1, 6, 98, 3, 871, 12, 2580, 3245, 92414, 28183, 388198, 597939, 6098163, 2614292, 46193570, 23931316, 433900917, 204472823, 6035780362, 6681307311

Basic calculations (n = 81645498)

Multiplication

n×y
n×2 163290996
n×3 244936494
n×4 326581992
n×5 408227490

Division

n÷y
n÷2 40822749
n÷3 27215166
n÷3 20411374.5
n÷5 16329099.6

Exponentiation

ny
n2 6665987343668004
n3 5.4424785633547E+23
n4 4.4435387265942E+31
n5 3.6279493221507E+39

Nth Root

y√n
2√n 9035.7898381935
3√n 433.82117616005
4√n 95.056771658801
5√n 38.22842877574

Divisors of 81645498

1, 2, 9, 18, 59, 118, 241, 319, 482, 531, 638, 1062, 2169, 2871, 4338, 5742, 14219, 18821, 28438, 37642, 76879, 127971, 153758, 169389, 255942, 338778, 691911, 1383822, 4535861, 9071722, 40822749, 81645498

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 -81645497
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 81645498 can be divided by 32 positive divisors. The sum of these divisors (counting 81645498) is 1, the average is 0.03125.

Base conversion 81645498

Base System Value
2 Binary 100110111011100111110111010
3 Ternary 12200122000120100
4 Quaternary 10313130332322
5 Quinary 131400123443
6 Senary 12033540230
8 Octal 467347672
10 Decimal 81645498
12 Duodecimal 23414676
16 Hexadecimal 4ddcfba
20 Vigesimal 15a5dei
36 Base36 1cly2i

Cryptographic Hash Functions

md5 fb42fd3f36834ea2949e944cfa9f8bb2
sha1 23c73b6be9e617c2ab8c57556337dd6e7f6b2a83
sha256 3c6a235c69dc62902fe39e2cd9d9f53983e144e8f018d7f2cdb111d65bc055d2
sha512 f0af419bed466ebeb66288bec8335733bd66e6a8f9c1630c2fff77bbddf1807612c0df175aa9454840cfba89451bd91bafd3737ebd0c31e83dfb2e1ca3ef62d6
ripemd-160 68374592732d0fa53d518396c7d3f9fcf8dd46ee

81645498 as geometric shapes

Circle

Radius = n
Diameter 163290996
Circumference 512993793.43096
Area 2.094181686779E+16

Sphere

Radius = n
Volume 2.279740089594E+24
Surface area 8.376726747116E+16
Circumference 512993793.43096

Square

Length = n
Perimeter 326581992
Area 6665987343668004
Diagonal 115464170.57831

Cube

Length = n
Surface area 39995924062008024
Volume 5.4424785633547E+23
Space diagonal 141414150.74526

Equilateral Triangle

Length = n
Perimeter 244936494
Area 2.886457190461E+15
Altitude 70707075.372632

Triangular Pyramid

Length = n
Surface area 2.886457190461E+15
Volume 6.4140224976842E+22
Height 38488056.859435