81428080 (number)

81428080 is an even 8-digits composite number following 81428079 and preceding 81428081. In scientific notation, it is written as 8.1428080 × 10^7. The sum of its digits is 31. It has a total of 6 prime factors and 20 positive divisors. There are 32571200 positive integers (up to 81428080) that are relatively prime to 81428080.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred twenty-eight thousand eighty

Notation

Scientific notation 8.1428080 × 10^7
Engineering notation 8.1428080 × 10^6

Prime Factorization of 81428080

Prime Factorization 2 × 2 × 2 × 2 × 5 × 1017851

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 10178510
Product of the distinct prime numbers

The prime factorization of 81428080 is 2 × 2 × 2 × 2 × 5 × 1017851. Since it has a total of 6 prime factors.

Most popular turbo-numbers

9, 1, 56, 45, 785, 413, 7964, 6805, 62162, 43064, 437824, 130968, 4189715, 6564745, 23329073, 76162319, 85028560, 432392215, 2730062764, 9474151085

Basic calculations (n = 81428080)

Multiplication

n×y
n×2 162856160
n×3 244284240
n×4 325712320
n×5 407140400

Division

n÷y
n÷2 40714040
n÷3 27142693.333333
n÷3 20357020
n÷5 16285616

Exponentiation

ny
n2 6630532212486400
n3 5.3991150744092E+23
n4 4.396395742082E+31
n5 3.5799006419791E+39

Nth Root

y√n
2√n 9023.7508830863
3√n 433.4357522541
4√n 94.993425472957
5√n 38.208046963629

Divisors of 81428080

1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1017851, 2035702, 4071404, 5089255, 8142808, 10178510, 16285616, 20357020, 40714040, 81428080

20 divisors

τ Total Divisors 20
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81428079
Sum of the proper positive divisors of n
A Arithmetic Mean 0.05
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 20
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81428080 can be divided by 20 positive divisors. The sum of these divisors (counting 81428080) is 1, the average is 0.05.

Base conversion 81428080

Base System Value
2 Binary 100110110100111111001110000
3 Ternary 12200012222022211
4 Quaternary 10312213321300
5 Quinary 131321144310
6 Senary 12025141504
8 Octal 466477160
10 Decimal 81428080
12 Duodecimal 2332a894
16 Hexadecimal 4da7e70
20 Vigesimal 158ia40
36 Base36 1chab4

Cryptographic Hash Functions

md5 9d582116e8a57eb2d04c6f21e9984d2d
sha1 59842adfa22b782fb444aa4c50746c4c313d1ca0
sha256 7a79766db88f4eeef30ad9e3307f6379afae3014d8660e807e153e832962485f
sha512 ccc5218a90db948b8fac7cee003a0b660984fe674e3aa20fad656ee424e7aa794e695c87f506a096a9112a59aab37f60efc1ebaf7f00164d58e2b5984d4c1ab0
ripemd-160 4db7f8af4542e983cc442c4f16e03b9b1a627168

81428080 as geometric shapes

Circle

Radius = n
Diameter 162856160
Circumference 511627715.84784
Area 2.0830431288138E+16

Sphere

Radius = n
Volume 2.26157603382E+24
Surface area 8.3321725152551E+16
Circumference 511627715.84784

Square

Length = n
Perimeter 325712320
Area 6630532212486400
Diagonal 115156695.094

Cube

Length = n
Surface area 39783193274918400
Volume 5.3991150744092E+23
Space diagonal 141037571.72278

Equilateral Triangle

Length = n
Perimeter 244284240
Area 2.8711046683121E+15
Altitude 70518785.861392

Triangular Pyramid

Length = n
Surface area 2.8711046683121E+15
Volume 6.3629181358688E+22
Height 38385565.031334