81245212 (number)

81245212 is an even 8-digits composite number following 81245211 and preceding 81245213. In scientific notation, it is written as 8.1245212 × 10^7. The sum of its digits is 25. It has a total of 4 prime factors and 12 positive divisors. There are 40588560 positive integers (up to 81245212) that are relatively prime to 81245212.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1245212 × 10^7
Engineering notation 8.1245212 × 10^6

Prime Factorization of 81245212

Prime Factorization 2 × 2 × 1291 × 15733

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 40622606
Product of the distinct prime numbers

The prime factorization of 81245212 is 2 × 2 × 1291 × 15733. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 10, 2, 11, 335, 360, 2673, 2162, 70948, 15947, 628718, 488920, 743247, 7967515, 77819049, 42276301, 312920374, 163339862, 5142516901, 8636791727

Basic calculations (n = 81245212)

Multiplication

n×y
n×2 162490424
n×3 243735636
n×4 324980848
n×5 406226060

Division

n÷y
n÷2 40622606
n÷3 27081737.333333
n÷3 20311303
n÷5 16249042.4

Exponentiation

ny
n2 6600784472924944
n3 5.362821338691E+23
n4 4.3570355658007E+31
n5 3.5398827823502E+39

Nth Root

y√n
2√n 9013.6125942931
3√n 433.11104470264
4√n 94.94004736829
5√n 38.190870299064

Divisors of 81245212

1, 2, 4, 1291, 2582, 5164, 15733, 31466, 62932, 20311303, 40622606, 81245212

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81245211
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81245212 can be divided by 12 positive divisors. The sum of these divisors (counting 81245212) is 1, the average is 0.083333333333333.

Base conversion 81245212

Base System Value
2 Binary 100110101111011010000011100
3 Ternary 12122212200110221
4 Quaternary 10311323100130
5 Quinary 131244321322
6 Senary 12021211124
8 Octal 465732034
10 Decimal 81245212
12 Duodecimal 23260aa4
16 Hexadecimal 4d7b41c
20 Vigesimal 157fd0c
36 Base36 1cdd7g

Cryptographic Hash Functions

md5 cd618ee3118d9b2dcf2d9ed133f04db0
sha1 8cd3c59054a31a16913743e5178ee27f2666589f
sha256 24f9b40405477e56eb7e3c7e0438db07d749e7d8ceb8aabea92049ec1154ed58
sha512 82a88adc51434d92b077877217b9ab7f3afc5ac916bd48477e1e0f3ed4a4809f7ba8fb391f0026a27bc3110fc74a1123c4fa38085957c3ef07942cfadc3f5196
ripemd-160 5045aa82ddc6785fe14372a9dfac1cac1571d63a

81245212 as geometric shapes

Circle

Radius = n
Diameter 162490424
Circumference 510478722.31709
Area 2.0736976008071E+16

Sphere

Radius = n
Volume 2.2463733493528E+24
Surface area 8.2947904032282E+16
Circumference 510478722.31709

Square

Length = n
Perimeter 324980848
Area 6600784472924944
Diagonal 114898080.68828

Cube

Length = n
Surface area 39604706837549664
Volume 5.362821338691E+23
Space diagonal 140720835.0557

Equilateral Triangle

Length = n
Perimeter 243735636
Area 2.8582235192294E+15
Altitude 70360417.527852

Triangular Pyramid

Length = n
Surface area 2.8582235192294E+15
Volume 6.3201455581338E+22
Height 38299360.229426