81245250 (number)

81245250 is an even 8-digits composite number following 81245249 and preceding 81245251. In scientific notation, it is written as 8.1245250 × 10^7. The sum of its digits is 27. It has a total of 5 prime factors and 32 positive divisors. There are 21664800 positive integers (up to 81245250) that are relatively prime to 81245250.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred forty-five thousand two hundred fifty

Notation

Scientific notation 8.1245250 × 10^7
Engineering notation 8.1245250 × 10^6

Prime Factorization of 81245250

Prime Factorization 2 × 25 × 5 × 9 × 36109

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81245250
Product of the distinct prime numbers

The prime factorization of 81245250 is 2 × 25 × 5 × 9 × 36109. Since it has a total of 5 prime factors.

Most popular turbo-numbers

5, 10, 59, 52, 221, 162, 6591, 8996, 83890, 11160, 283722, 675994, 8048708, 2567397, 49071318, 44647072, 437417452, 347133754, 9082153988, 8099802239

Basic calculations (n = 81245250)

Multiplication

n×y
n×2 162490500
n×3 243735750
n×4 324981000
n×5 406226250

Division

n÷y
n÷2 40622625
n÷3 27081750
n÷3 20311312.5
n÷5 16249050

Exponentiation

ny
n2 6600790647562500
n3 5.3628288635888E+23
n4 4.3570437172949E+31
n5 3.5398910607255E+39

Nth Root

y√n
2√n 9013.6147022158
3√n 433.11111222751
4√n 94.940058469625
5√n 38.190873871589

Divisors of 81245250

1, 2, 5, 9, 10, 18, 25, 45, 50, 90, 125, 225, 250, 450, 1125, 2250, 36109, 72218, 180545, 324981, 361090, 649962, 902725, 1624905, 1805450, 3249810, 4513625, 8124525, 9027250, 16249050, 40622625, 81245250

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 -81245249
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 81245250 can be divided by 32 positive divisors. The sum of these divisors (counting 81245250) is 1, the average is 0.03125.

Base conversion 81245250

Base System Value
2 Binary 100110101111011010001000010
3 Ternary 12122212200112100
4 Quaternary 10311323101002
5 Quinary 131244322000
6 Senary 12021211230
8 Octal 465732102
10 Decimal 81245250
12 Duodecimal 23260b16
16 Hexadecimal 4d7b442
20 Vigesimal 157fd2a
36 Base36 1cdd8i

Cryptographic Hash Functions

md5 c2a06a96a25bcc965707ee4fb112143d
sha1 52b5ef4eff247675a46ae7bbc88d55e7db5a9819
sha256 43423b30e5a5d68ab41d6294ca796ad7b966ca429d7a7ea2f8aebc10cb27e611
sha512 42954ae13627cdfc3741e0eb84c8f71a174b1e0f2da90b9908ee1f06b43893c17a46d3b2f93b9a0cee02e424aaf61ad0a46bb46cf85da27b40f587d28cff432a
ripemd-160 4201e3ecde67e0337641fdc2cace8f84694bfae4

81245250 as geometric shapes

Circle

Radius = n
Diameter 162490500
Circumference 510478961.07813
Area 2.0736995406267E+16

Sphere

Radius = n
Volume 2.2463765013746E+24
Surface area 8.2947981625066E+16
Circumference 510478961.07813

Square

Length = n
Perimeter 324981000
Area 6600790647562500
Diagonal 114898134.42839

Cube

Length = n
Surface area 39604743885375000
Volume 5.3628288635888E+23
Space diagonal 140720900.87364

Equilateral Triangle

Length = n
Perimeter 243735750
Area 2.8582261929259E+15
Altitude 70360450.436818

Triangular Pyramid

Length = n
Surface area 2.8582261929259E+15
Volume 6.3201544263109E+22
Height 38299378.142798