81001808 (number)

81001808 is an even 8-digits composite number following 81001807 and preceding 81001809. In scientific notation, it is written as 8.1001808 × 10^7. The sum of its digits is 26. It has a total of 7 prime factors and 40 positive divisors. There are 39039104 positive integers (up to 81001808) that are relatively prime to 81001808.

Interesting facts

Basic properties

Name

Name eighty-one million one thousand eight hundred eight

Notation

Scientific notation 8.1001808 × 10^7
Engineering notation 8.1001808 × 10^6

Prime Factorization of 81001808

Prime Factorization 2 × 2 × 2 × 2 × 53 × 59 × 1619

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 10125226
Product of the distinct prime numbers

The prime factorization of 81001808 is 2 × 2 × 2 × 2 × 53 × 59 × 1619. Since it has a total of 7 prime factors.

Most popular turbo-numbers

4, 1, 80, 37, 830, 640, 9854, 9481, 36188, 64686, 523749, 189779, 5383994, 9197355, 45658696, 63373793, 465874730, 605000075, 2815111453, 9989288851

Basic calculations (n = 81001808)

Multiplication

n×y
n×2 162003616
n×3 243005424
n×4 324007232
n×5 405009040

Division

n÷y
n÷2 40500904
n÷3 27000602.666667
n÷3 20250452
n÷5 16200361.6

Exponentiation

ny
n2 6561292899268864
n3 5.3147658765834E+23
n4 4.3050564509996E+31
n5 3.4871735607303E+39

Nth Root

y√n
2√n 9000.1004438839
3√n 432.67809031176
4√n 94.868859189325
5√n 38.16795948321

Divisors of 81001808

1, 2, 4, 8, 16, 53, 59, 106, 118, 212, 236, 424, 472, 848, 944, 1619, 3127, 3238, 6254, 6476, 12508, 12952, 25016, 25904, 50032, 85807, 95521, 171614, 191042, 343228, 382084, 686456, 764168, 1372912, 1528336, 5062613, 10125226, 20250452, 40500904, 81001808

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 -81001807
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 81001808 can be divided by 40 positive divisors. The sum of these divisors (counting 81001808) is 1, the average is 0.025.

Base conversion 81001808

Base System Value
2 Binary 100110100111111110101010000
3 Ternary 12122102022120222
4 Quaternary 10310333311100
5 Quinary 131214024213
6 Senary 12012052212
8 Octal 464776520
10 Decimal 81001808
12 Duodecimal 23164068
16 Hexadecimal 4d3fd50
20 Vigesimal 15654a8
36 Base36 1c85e8

Cryptographic Hash Functions

md5 8b33c3c2bcbe88a150579143d156aea9
sha1 abb763368547c8492795ac1b99c3ca391fc068af
sha256 0b89ca8fb89b1d4603232fd76dc20c3ba4de02c9fc5a0e597d97d0d2956de6f7
sha512 abf46e160129055085b1755144c2eea7eb9b927daa930f924ffe08656507363d7c8a610fc5365705cd0afcea8d0811cff4a0da24087e3df15056831eef1c3b8a
ripemd-160 e1824c5321d5c59bcd8ed1bfb64690d1859b7e3f

81001808 as geometric shapes

Circle

Radius = n
Diameter 162003616
Circumference 508949369.88058
Area 2.0612909570394E+16

Sphere

Radius = n
Volume 2.2262439244565E+24
Surface area 8.2451638281576E+16
Circumference 508949369.88058

Square

Length = n
Perimeter 324007232
Area 6561292899268864
Diagonal 114553855.45034

Cube

Length = n
Surface area 39367757395613184
Volume 5.3147658765834E+23
Space diagonal 140299246.96094

Equilateral Triangle

Length = n
Perimeter 243005424
Area 2.8411231662186E+15
Altitude 70149623.48047

Triangular Pyramid

Length = n
Surface area 2.8411231662186E+15
Volume 6.2635116529183E+22
Height 38184618.483447