81445830 (number)

81445830 is an even 8-digits composite number following 81445829 and preceding 81445831. In scientific notation, it is written as 8.1445830 × 10^7. The sum of its digits is 33. It has a total of 5 prime factors and 24 positive divisors. There are 21239488 positive integers (up to 81445830) that are relatively prime to 81445830.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1445830 × 10^7
Engineering notation 8.1445830 × 10^6

Prime Factorization of 81445830

Prime Factorization 2 × 15 × 47 × 47 × 1229

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 1732890
Product of the distinct prime numbers

The prime factorization of 81445830 is 2 × 15 × 47 × 47 × 1229. Since it has a total of 5 prime factors.

Most popular turbo-numbers

4, 8, 86, 76, 814, 956, 53, 527, 59653, 65009, 523766, 967300, 2757695, 2975192, 9902999, 2941168, 627254813, 435516960, 5941622330, 1225920380

Basic calculations (n = 81445830)

Multiplication

n×y
n×2 162891660
n×3 244337490
n×4 325783320
n×5 407229150

Division

n÷y
n÷2 40722915
n÷3 27148610
n÷3 20361457.5
n÷5 16289166

Exponentiation

ny
n2 6633423224388900
n3 5.4026466025163E+23
n4 4.4002303673862E+31
n5 3.5838041446297E+39

Nth Root

y√n
2√n 9024.7343451206
3√n 433.46724395267
4√n 94.998601806135
5√n 38.209712565242

Divisors of 81445830

1, 2, 15, 30, 47, 94, 705, 1229, 1410, 2209, 2458, 4418, 18435, 33135, 36870, 57763, 66270, 115526, 866445, 1732890, 2714861, 5429722, 40722915, 81445830

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 -81445829
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 81445830 can be divided by 24 positive divisors. The sum of these divisors (counting 81445830) is 1, the average is 0.041666666666667.

Base conversion 81445830

Base System Value
2 Binary 100110110101100001111000110
3 Ternary 12200020212200020
4 Quaternary 10312230033012
5 Quinary 131322231310
6 Senary 12025400010
8 Octal 466541706
10 Decimal 81445830
12 Duodecimal 23339006
16 Hexadecimal 4dac3c6
20 Vigesimal 1590eba
36 Base36 1cho06

Cryptographic Hash Functions

md5 88986952f863c7a5d9319cb9793f7a86
sha1 df088e400bb2fce5075827bbf05528c46bff1d4d
sha256 0d0e8b1a62b3ae6e14e25d53871feb275801bdfd91669d51bbcd914160bbf98a
sha512 e34e9b3da19356d9dba2343d2cf61937ce361b2f8bf5d718abb5e32a6554db2cef5adca9d211b645c042c2c0b1424b388d685777513f6da23778889bd4067945
ripemd-160 a4908aa629617739950a9bd3e57fd63b8cc7923f

81445830 as geometric shapes

Circle

Radius = n
Diameter 162891660
Circumference 511739242.38705
Area 2.0839513669892E+16

Sphere

Radius = n
Volume 2.2630553168543E+24
Surface area 8.3358054679568E+16
Circumference 511739242.38705

Square

Length = n
Perimeter 325783320
Area 6633423224388900
Diagonal 115181797.38473

Cube

Length = n
Surface area 39800539346333400
Volume 5.4026466025163E+23
Space diagonal 141068315.62462

Equilateral Triangle

Length = n
Perimeter 244337490
Area 2.8723565131872E+15
Altitude 70534157.812309

Triangular Pyramid

Length = n
Surface area 2.8723565131872E+15
Volume 6.3670800816562E+22
Height 38393932.461578