81749655 (number)

81749655 is an odd 8-digits composite number following 81749654 and preceding 81749656. In scientific notation, it is written as 8.1749655 × 10^7. The sum of its digits is 45. It has a total of 5 prime factors and 32 positive divisors. There are 40243392 positive integers (up to 81749655) that are relatively prime to 81749655.

Interesting facts

Basic properties

Name

Name eighty-one million seven hundred forty-nine thousand six hundred fifty-five

Notation

Scientific notation 8.1749655 × 10^7
Engineering notation 8.1749655 × 10^6

Prime Factorization of 81749655

Prime Factorization 39 × 5 × 9 × 3 × 15527

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81749655
Product of the distinct prime numbers

The prime factorization of 81749655 is 39 × 5 × 9 × 3 × 15527. Since it has a total of 5 prime factors.

Most popular turbo-numbers

10, 1, 75, 63, 472, 389, 7479, 6813, 40638, 74136, 386297, 59267, 8623990, 3268622, 16262414, 42560673, 182737382, 951910305, 5535789759, 6938338362

Basic calculations (n = 81749655)

Multiplication

n×y
n×2 163499310
n×3 245248965
n×4 326998620
n×5 408748275

Division

n÷y
n÷2 40874827.5
n÷3 27249885
n÷3 20437413.75
n÷5 16349931

Exponentiation

ny
n2 6683006092619025
n3 5.463334424345E+23
n4 4.4662570433983E+31
n5 3.6511497243913E+39

Nth Root

y√n
2√n 9041.5515814488
3√n 434.00557624837
4√n 95.087073682225
5√n 38.238177575759

Divisors of 81749655

1, 3, 5, 9, 15, 27, 39, 45, 117, 135, 195, 351, 585, 1053, 1755, 5265, 15527, 46581, 77635, 139743, 232905, 419229, 605553, 698715, 1816659, 2096145, 3027765, 5449977, 9083295, 16349931, 27249885, 81749655

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 -81749654
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 81749655 can be divided by 32 positive divisors. The sum of these divisors (counting 81749655) is 1, the average is 0.03125.

Base conversion 81749655

Base System Value
2 Binary 100110111110110011010010111
3 Ternary 12200211022110000
4 Quaternary 10313312122113
5 Quinary 131411442110
6 Senary 12040102343
8 Octal 467663227
10 Decimal 81749655
12 Duodecimal 234649b3
16 Hexadecimal 4df6697
20 Vigesimal 15aie2f
36 Base36 1co6fr

Cryptographic Hash Functions

md5 4ec37789ece3137f41cac99fdabb1f2e
sha1 924bbda25bfc8aecdb32087c9879e605aac9ab5f
sha256 2adac967dc9a7bf2f68c4e83e58fab52110eb43e12c23bf5cd35c2344a698268
sha512 b2f0c9984d0d75e28d2ccc65fe06912bce4a240ecc1f38ea2a5d89384270a9f1508b0e9528ff43c91a44650e9edc68376ef0da766b2e63dbefa5414e15356fc6
ripemd-160 3ac442d7b9dc859486ed9a06ed32f7e073af9059

81749655 as geometric shapes

Circle

Radius = n
Diameter 163499310
Circumference 513648231.163
Area 2.0995282844468E+16

Sphere

Radius = n
Volume 2.2884761722169E+24
Surface area 8.3981131377871E+16
Circumference 513648231.163

Square

Length = n
Perimeter 326998620
Area 6683006092619025
Diagonal 115611470.82032

Cube

Length = n
Surface area 40098036555714150
Volume 5.463334424345E+23
Space diagonal 141594555.96123

Equilateral Triangle

Length = n
Perimeter 245248965
Area 2.8938265249271E+15
Altitude 70797277.980614

Triangular Pyramid

Length = n
Surface area 2.8938265249271E+15
Volume 6.4386013655738E+22
Height 38537156.940107