81864518 (number)

81864518 is an even 8-digits composite number following 81864517 and preceding 81864519. In scientific notation, it is written as 8.1864518 × 10^7. The sum of its digits is 41. It has a total of 4 prime factors and 16 positive divisors. There are 39885216 positive integers (up to 81864518) that are relatively prime to 81864518.

Interesting facts

Basic properties

Name

Name eighty-one million eight hundred sixty-four thousand five hundred eighteen

Notation

Scientific notation 8.1864518 × 10^7
Engineering notation 8.1864518 × 10^6

Prime Factorization of 81864518

Prime Factorization 2 × 43 × 1709 × 557

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81864518
Product of the distinct prime numbers

The prime factorization of 81864518 is 2 × 43 × 1709 × 557. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 4, 100, 31, 976, 457, 6009, 7020, 8971, 43255, 312539, 567204, 8382856, 1235328, 95095141, 62026044, 839542013, 313054265, 4487525499, 8473146873

Basic calculations (n = 81864518)

Multiplication

n×y
n×2 163729036
n×3 245593554
n×4 327458072
n×5 409322590

Division

n÷y
n÷2 40932259
n÷3 27288172.666667
n÷3 20466129.5
n÷5 16372903.6

Exponentiation

ny
n2 6701799307372324
n3 5.4863957003077E+23
n4 4.4914113956296E+31
n5 3.6768722904293E+39

Nth Root

y√n
2√n 9047.9013036173
3√n 434.2087487787
4√n 95.120456809339
5√n 38.248916912527

Divisors of 81864518

1, 2, 43, 86, 557, 1114, 1709, 3418, 23951, 47902, 73487, 146974, 951913, 1903826, 40932259, 81864518

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81864517
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81864518 can be divided by 16 positive divisors. The sum of these divisors (counting 81864518) is 1, the average is 0.0625.

Base conversion 81864518

Base System Value
2 Binary 100111000010010011101000110
3 Ternary 12201001011000012
4 Quaternary 10320102131012
5 Quinary 131424131033
6 Senary 12042350222
8 Octal 470223506
10 Decimal 81864518
12 Duodecimal 234bb372
16 Hexadecimal 4e12746
20 Vigesimal 15bd15i
36 Base36 1cqn2e

Cryptographic Hash Functions

md5 b098b8baeb027542fd3627255b37b3c3
sha1 b8d542f710fab77f2f739ea7e692c27a9cd84646
sha256 141c6410a04a62dbdac2dfdcefe54fc67cadea3f256242b8b46f0e8011bc24f6
sha512 7007282c7cf9ca2f4bec901fb3de26e31b76642267947499bb353a5d472021bca996207b8f55f45f832bbf381f1eb07e316bda8b2823a9677e401eb4735769c4
ripemd-160 bd60d80f2b4dda1024520f0fc2f44880ebba09e6

81864518 as geometric shapes

Circle

Radius = n
Diameter 163729036
Circumference 514369936.67694
Area 2.1054323469874E+16

Sphere

Radius = n
Volume 2.2981360569031E+24
Surface area 8.4217293879496E+16
Circumference 514369936.67694

Square

Length = n
Perimeter 327458072
Area 6701799307372324
Diagonal 115773911.63274

Cube

Length = n
Surface area 40210795844233944
Volume 5.4863957003077E+23
Space diagonal 141793504.51314

Equilateral Triangle

Length = n
Perimeter 245593554
Area 2.9019642256247E+15
Altitude 70896752.256568

Triangular Pyramid

Length = n
Surface area 2.9019642256247E+15
Volume 6.4657793399338E+22
Height 38591303.877579