81490140 (number)

81490140 is an even 8-digits composite number following 81490139 and preceding 81490141. In scientific notation, it is written as 8.1490140 × 10^7. The sum of its digits is 27. It has a total of 5 prime factors and 24 positive divisors. There are 21567744 positive integers (up to 81490140) that are relatively prime to 81490140.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred ninety thousand one hundred forty

Notation

Scientific notation 8.1490140 × 10^7
Engineering notation 8.1490140 × 10^6

Prime Factorization of 81490140

Prime Factorization 2 × 2 × 45 × 139 × 3257

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40745070
Product of the distinct prime numbers

The prime factorization of 81490140 is 2 × 2 × 45 × 139 × 3257. Since it has a total of 5 prime factors.

Most popular turbo-numbers

3, 6, 95, 84, 343, 18, 1275, 5701, 90520, 30461, 352280, 48367, 2630859, 3027218, 95110307, 32575952, 930911222, 921153839, 2699032543, 5314161971

Basic calculations (n = 81490140)

Multiplication

n×y
n×2 162980280
n×3 244470420
n×4 325960560
n×5 407450700

Division

n÷y
n÷2 40745070
n÷3 27163380
n÷3 20372535
n÷5 16298028

Exponentiation

ny
n2 6640642917219600
n3 5.4114692101423E+23
n4 4.4098138354019E+31
n5 3.5935634682084E+39

Nth Root

y√n
2√n 9027.1889312233
3√n 433.54583791507
4√n 95.011519992174
5√n 38.213869202955

Divisors of 81490140

1, 2, 4, 45, 90, 139, 180, 278, 556, 3257, 6255, 6514, 12510, 13028, 25020, 146565, 293130, 452723, 586260, 905446, 1810892, 20372535, 40745070, 81490140

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81490139
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81490140 can be divided by 24 positive divisors. The sum of these divisors (counting 81490140) is 1, the average is 0.041666666666667.

Base conversion 81490140

Base System Value
2 Binary 100110110110111000011011100
3 Ternary 12200100010110100
4 Quaternary 10312313003130
5 Quinary 131330141030
6 Senary 12030341100
8 Octal 466670334
10 Decimal 81490140
12 Duodecimal 2335a790
16 Hexadecimal 4db70dc
20 Vigesimal 1596570
36 Base36 1cim70

Cryptographic Hash Functions

md5 ae2dc0a9bd6d8f97a4358ce38c05535a
sha1 2b2f4d3555e3ef79261aa26f5ed536cdfec9800e
sha256 2438da98b4d345e910b255615f9c557549e94c586d0105b0931928ced52fb661
sha512 5a0688c74409869f785ba124ecfc7e294c2d445eac8051128c0af3b09820070f984c4326c566f5c2720625f5744d07732e545b2d5d56e9cba0bc17b785dd96d4
ripemd-160 c97c3dc024f90aea0bea56e072ca298e37770b6c

81490140 as geometric shapes

Circle

Radius = n
Diameter 162980280
Circumference 512017650.32801
Area 2.086219500385E+16

Sphere

Radius = n
Volume 2.2667509220947E+24
Surface area 8.3448780015401E+16
Circumference 512017650.32801

Square

Length = n
Perimeter 325960560
Area 6640642917219600
Diagonal 115244461.18768

Cube

Length = n
Surface area 39843857503317600
Volume 5.4114692101423E+23
Space diagonal 141145062.7959

Equilateral Triangle

Length = n
Perimeter 244470420
Area 2.8754827318867E+15
Altitude 70572531.39795

Triangular Pyramid

Length = n
Surface area 2.8754827318867E+15
Volume 6.3774776244564E+22
Height 38414820.395894