81743989 (number)

81743989 is an odd 8-digits composite number following 81743988 and preceding 81743990. In scientific notation, it is written as 8.1743989 × 10^7. The sum of its digits is 49. It has a total of 3 prime factors and 8 positive divisors. There are 76991040 positive integers (up to 81743989) that are relatively prime to 81743989.

Interesting facts

Basic properties

Name

Name eighty-one million seven hundred forty-three thousand nine hundred eighty-nine

Notation

Scientific notation 8.1743989 × 10^7
Engineering notation 8.1743989 × 10^6

Prime Factorization of 81743989

Prime Factorization 1591 × 191 × 269

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 81743989
Product of the distinct prime numbers

The prime factorization of 81743989 is 1591 × 191 × 269. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81743989)

Multiplication

n×y
n×2 163487978
n×3 245231967
n×4 326975956
n×5 408719945

Division

n÷y
n÷2 40871994.5
n÷3 27247996.333333
n÷3 20435997.25
n÷5 16348797.8

Exponentiation

ny
n2 6682079737632121
n3 5.4621985257012E+23
n4 4.4650189620074E+31
n5 3.6498846091512E+39

Nth Root

y√n
2√n 9041.2382448424
3√n 433.99554916259
4√n 95.085426038076
5√n 38.237647509862

Divisors of 81743989

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81743988
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81743989 can be divided by 8 positive divisors. The sum of these divisors (counting 81743989) is 1, the average is 0.125.

Base conversion 81743989

Base System Value
2 Binary 100110111110101000001110101
3 Ternary 12200211000200011
4 Quaternary 10313311001311
5 Quinary 131411301424
6 Senary 12040020221
8 Octal 467650165
10 Decimal 81743989
12 Duodecimal 23461671
16 Hexadecimal 4df5075
20 Vigesimal 15ahjj9
36 Base36 1co22d

Cryptographic Hash Functions

md5 c58e140494539e1d8325d40d8de833a9
sha1 3c247b4672885fa89c5b64df8b80b2a8d35f45f5
sha256 54b4ad2fc0668a65b3b6882f628277ef4656f2a6d8792f01a5701ebc480cd2e3
sha512 e3589bcba8b1f4b8f20d91775a550cfb0d8a868c23d247970aa624d1ca103db7f23c4b6405a350fff79549761decb8511f3a2fe4ded8439569680a58e63d233e
ripemd-160 12f1fa8f7b4ec99a39d3a51a1e3befbe12f8e40a

81743989 as geometric shapes

Circle

Radius = n
Diameter 163487978
Circumference 513612630.63505
Area 2.0992372614446E+16

Sphere

Radius = n
Volume 2.2880003681056E+24
Surface area 8.3969490457785E+16
Circumference 513612630.63505

Square

Length = n
Perimeter 326975956
Area 6682079737632121
Diagonal 115603457.88628

Cube

Length = n
Surface area 40092478425792726
Volume 5.4621985257012E+23
Space diagonal 141584742.16135

Equilateral Triangle

Length = n
Perimeter 245231967
Area 2.8934254014513E+15
Altitude 70792371.080676

Triangular Pyramid

Length = n
Surface area 2.8934254014513E+15
Volume 6.4372626961842E+22
Height 38534485.962092