81459904 (number)

81459904 is an even 8-digits composite number following 81459903 and preceding 81459905. In scientific notation, it is written as 8.1459904 × 10^7. The sum of its digits is 40. It has a total of 7 prime factors and 14 positive divisors. There are 40729920 positive integers (up to 81459904) that are relatively prime to 81459904.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred fifty-nine thousand nine hundred four

Notation

Scientific notation 8.1459904 × 10^7
Engineering notation 8.1459904 × 10^6

Prime Factorization of 81459904

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 1272811

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 2545622
Product of the distinct prime numbers

The prime factorization of 81459904 is 2 × 2 × 2 × 2 × 2 × 2 × 1272811. Since it has a total of 7 prime factors.

Most popular turbo-numbers

5, 10, 90, 52, 558, 866, 6798, 9723, 56653, 4515, 745673, 359626, 6648588, 286781, 126601, 2585891, 429208257, 124250056, 4119028685, 7038860847

Basic calculations (n = 81459904)

Multiplication

n×y
n×2 162919808
n×3 244379712
n×4 325839616
n×5 407299520

Division

n÷y
n÷2 40729952
n÷3 27153301.333333
n÷3 20364976
n÷5 16291980.8

Exponentiation

ny
n2 6635715959689216
n3 5.4054478504755E+23
n4 4.4032726297674E+31
n5 3.5869016570668E+39

Nth Root

y√n
2√n 9025.514057382
3√n 433.49221051275
4√n 95.002705526643
5√n 38.211033016708

Divisors of 81459904

1, 2, 4, 8, 16, 32, 64, 1272811, 2545622, 5091244, 10182488, 20364976, 40729952, 81459904

14 divisors

τ Total Divisors 14
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81459903
Sum of the proper positive divisors of n
A Arithmetic Mean 0.071428571428571
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 14
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81459904 can be divided by 14 positive divisors. The sum of these divisors (counting 81459904) is 1, the average is 0.071428571428571.

Base conversion 81459904

Base System Value
2 Binary 100110110101111101011000000
3 Ternary 12200021120222111
4 Quaternary 10312233223000
5 Quinary 131323204104
6 Senary 12025545104
8 Octal 466575300
10 Decimal 81459904
12 Duodecimal 23345194
16 Hexadecimal 4dafac0
20 Vigesimal 15929f4
36 Base36 1chyv4

Cryptographic Hash Functions

md5 83be8c0100f52fc5a4a3d38339255f1b
sha1 bb2081c9564fed40825645d28ee3f6b5407e02ef
sha256 c5e79b8b20c3bd629ce364bd6a7c22a5d94fa139ae1b203c77015cf54b12b4be
sha512 0e5f73e3cc76425e98e0d71995f6f5b2d9d721d5c867f2e3a0338fc05919df403762e2513c08a46509d72a8506fe25f8290c0b64954ec35b2f61cf6998062281
ripemd-160 93e4a8de449f12146125610bf48be73a6c1b9147

81459904 as geometric shapes

Circle

Radius = n
Diameter 162919808
Circumference 511827671.93706
Area 2.0846716510268E+16

Sphere

Radius = n
Volume 2.2642287008555E+24
Surface area 8.3386866041073E+16
Circumference 511827671.93706

Square

Length = n
Perimeter 325839616
Area 6635715959689216
Diagonal 115201701.02641

Cube

Length = n
Surface area 39814295758135296
Volume 5.4054478504755E+23
Space diagonal 141092692.50768

Equilateral Triangle

Length = n
Perimeter 244379712
Area 2.8733492966943E+15
Altitude 70546346.253842

Triangular Pyramid

Length = n
Surface area 2.8733492966943E+15
Volume 6.3703813840358E+22
Height 38400567.008803