81749680 (number)

81749680 is an even 8-digits composite number following 81749679 and preceding 81749681. In scientific notation, it is written as 8.1749680 × 10^7. The sum of its digits is 43. It has a total of 7 prime factors and 40 positive divisors. There are 32626944 positive integers (up to 81749680) that are relatively prime to 81749680.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1749680 × 10^7
Engineering notation 8.1749680 × 10^6

Prime Factorization of 81749680

Prime Factorization 2 × 2 × 2 × 2 × 5 × 613 × 1667

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 10218710
Product of the distinct prime numbers

The prime factorization of 81749680 is 2 × 2 × 2 × 2 × 5 × 613 × 1667. Since it has a total of 7 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81749680)

Multiplication

n×y
n×2 163499360
n×3 245249040
n×4 326998720
n×5 408748400

Division

n÷y
n÷2 40874840
n÷3 27249893.333333
n÷3 20437420
n÷5 16349936

Exponentiation

ny
n2 6683010180102400
n3 5.4633394366011E+23
n4 4.4662625067352E+31
n5 3.651155307216E+39

Nth Root

y√n
2√n 9041.5529639548
3√n 434.00562048969
4√n 95.087080951909
5√n 38.238179914495

Divisors of 81749680

40 divisors

τ Total Divisors 40
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81749679
Sum of the proper positive divisors of n
A Arithmetic Mean 0.025
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 40
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81749680 can be divided by 40 positive divisors. The sum of these divisors (counting 81749680) is 1, the average is 0.025.

Base conversion 81749680

Base System Value
2 Binary 100110111110110011010110000
3 Ternary 12200211022110221
4 Quaternary 10313312122300
5 Quinary 131411442210
6 Senary 12040102424
8 Octal 467663260
10 Decimal 81749680
12 Duodecimal 23464a14
16 Hexadecimal 4df66b0
20 Vigesimal 15aie40
36 Base36 1co6gg

Cryptographic Hash Functions

md5 7395f4d39507ce87fe5182e8c1f91781
sha1 1eb30dac4034a5079581bbee88cf5a94d44d5360
sha256 b25ce78b1c26e41d93ecce06d4b1c8835425126f7dc38a27752c969d5908f7c8
sha512 388682f7d2a5a3cd39ee36ce125d5418c4ac1ba2f09283b4099b8e74098ae116777cb09fed5095a0c3b13ae05e5d3e583ce10c9e01ceee1e271ec95d65929727
ripemd-160 5a26dc91849de53be9b03f4b1c87902737024aad

81749680 as geometric shapes

Circle

Radius = n
Diameter 163499360
Circumference 513648388.24263
Area 2.0995295685676E+16

Sphere

Radius = n
Volume 2.2884782717458E+24
Surface area 8.3981182742702E+16
Circumference 513648388.24263

Square

Length = n
Perimeter 326998720
Area 6683010180102400
Diagonal 115611506.17566

Cube

Length = n
Surface area 40098061080614400
Volume 5.4633394366011E+23
Space diagonal 141594599.2625

Equilateral Triangle

Length = n
Perimeter 245249040
Area 2.8938282948593E+15
Altitude 70797299.631249

Triangular Pyramid

Length = n
Surface area 2.8938282948593E+15
Volume 6.4386072725743E+22
Height 38537168.72522