81895890 (number)

81895890 is an even 8-digits composite number following 81895889 and preceding 81895891. In scientific notation, it is written as 8.1895890 × 10^7. The sum of its digits is 48. It has a total of 5 prime factors and 32 positive divisors. There are 20689344 positive integers (up to 81895890) that are relatively prime to 81895890.

Interesting facts

Basic properties

Name

Name eighty-one million eight hundred ninety-five thousand eight hundred ninety

Notation

Scientific notation 8.1895890 × 10^7
Engineering notation 8.1895890 × 10^6

Prime Factorization of 81895890

Prime Factorization 2 × 5 × 3 × 19 × 143677

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81895890
Product of the distinct prime numbers

The prime factorization of 81895890 is 2 × 5 × 3 × 19 × 143677. Since it has a total of 5 prime factors.

Most popular turbo-numbers

6, 10, 36, 14, 926, 715, 5523, 3286, 85384, 63675, 448435, 195528, 3247010, 622033, 31098375, 37899585, 445235981, 363292857, 2019425098, 7533028466

Basic calculations (n = 81895890)

Multiplication

n×y
n×2 163791780
n×3 245687670
n×4 327583560
n×5 409479450

Division

n÷y
n÷2 40947945
n÷3 27298630
n÷3 20473972.5
n÷5 16379178

Exponentiation

ny
n2 6706936798892100
n3 5.4927055831902E+23
n4 4.4983001224333E+31
n5 3.6839229201378E+39

Nth Root

y√n
2√n 9049.6347992612
3√n 434.26420730743
4√n 95.129568480369
5√n 38.251848001982

Divisors of 81895890

1, 2, 3, 5, 6, 10, 15, 19, 30, 38, 57, 95, 114, 190, 285, 570, 143677, 287354, 431031, 718385, 862062, 1436770, 2155155, 2729863, 4310310, 5459726, 8189589, 13649315, 16379178, 27298630, 40947945, 81895890

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 -81895889
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 81895890 can be divided by 32 positive divisors. The sum of these divisors (counting 81895890) is 1, the average is 0.03125.

Base conversion 81895890

Base System Value
2 Binary 100111000011010000111010010
3 Ternary 12201002202001010
4 Quaternary 10320122013102
5 Quinary 131431132030
6 Senary 12043151350
8 Octal 470320722
10 Decimal 81895890
12 Duodecimal 23515556
16 Hexadecimal 4e1a1d2
20 Vigesimal 15bgjea
36 Base36 1crb9u

Cryptographic Hash Functions

md5 309d483078b265be8f1572f4cde96c2f
sha1 9f07dbbd816623bfeb3b84a29bb7c19daf0321b2
sha256 1a6ba8a21db08eea6179e1781e35aff79af18b38cf5e6dea382b6c7450ff798e
sha512 f48e9601da29667bfc77518b6d5c9ee1003bb41fe1a2df958928355bbf52d85540bac33b0505c4839d1c152e452b4e9bb774b3165d330b2d1f04bc20e2d6c170
ripemd-160 a5f83f5c26972f2da68121bc695e61a1bce5e0fe

81895890 as geometric shapes

Circle

Radius = n
Diameter 163791780
Circumference 514567052.7664
Area 2.107046337549E+16

Sphere

Radius = n
Volume 2.3007791344643E+24
Surface area 8.4281853501962E+16
Circumference 514567052.7664

Square

Length = n
Perimeter 327583560
Area 6706936798892100
Diagonal 115818278.34062

Cube

Length = n
Surface area 40241620793352600
Volume 5.4927055831902E+23
Space diagonal 141847842.41107

Equilateral Triangle

Length = n
Perimeter 245687670
Area 2.9041888247086E+15
Altitude 70923921.205536

Triangular Pyramid

Length = n
Surface area 2.9041888247086E+15
Volume 6.473215608225E+22
Height 38606092.780205