81542018 (number)

81542018 is an even 8-digits composite number following 81542017 and preceding 81542019. In scientific notation, it is written as 8.1542018 × 10^7. The sum of its digits is 29. It has a total of 4 prime factors and 16 positive divisors. There are 39592896 positive integers (up to 81542018) that are relatively prime to 81542018.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred forty-two thousand eighteen

Notation

Scientific notation 8.1542018 × 10^7
Engineering notation 8.1542018 × 10^6

Prime Factorization of 81542018

Prime Factorization 2 × 43 × 179 × 5297

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81542018
Product of the distinct prime numbers

The prime factorization of 81542018 is 2 × 43 × 179 × 5297. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 9, 73, 96, 389, 889, 6342, 4229, 8004, 34850, 701857, 768593, 2776051, 6953396, 2412564, 35935316, 193956166, 486934815, 3701785759, 9916247897

Basic calculations (n = 81542018)

Multiplication

n×y
n×2 163084036
n×3 244626054
n×4 326168072
n×5 407710090

Division

n÷y
n÷2 40771009
n÷3 27180672.666667
n÷3 20385504.5
n÷5 16308403.6

Exponentiation

ny
n2 6649100699512324
n3 5.4218108892345E+23
n4 4.4210540112255E+31
n5 3.6050166576232E+39

Nth Root

y√n
2√n 9030.0619045497
3√n 433.63781926744
4√n 95.026637868283
5√n 38.218733483401

Divisors of 81542018

1, 2, 43, 86, 179, 358, 5297, 7697, 10594, 15394, 227771, 455542, 948163, 1896326, 40771009, 81542018

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81542017
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81542018 can be divided by 16 positive divisors. The sum of these divisors (counting 81542018) is 1, the average is 0.0625.

Base conversion 81542018

Base System Value
2 Binary 100110111000011101110000010
3 Ternary 12200102202121202
4 Quaternary 10313003232002
5 Quinary 131333321033
6 Senary 12031421202
8 Octal 467035602
10 Decimal 81542018
12 Duodecimal 23384802
16 Hexadecimal 4dc3b82
20 Vigesimal 159cf0i
36 Base36 1cjq82

Cryptographic Hash Functions

md5 cac11874a3e7ef150876d065f47f51ed
sha1 999ab3b9c848e578496c6e1b73f3d866fb8cb3b1
sha256 e8fc3ed16897b01a584df09ffb941ccb4ac782564a0c2986d4b96dfb782c6986
sha512 0e26be56b11305428d3bf615726d302a47480d4b8997b31821b8fa21c9c1ea2a25d94c62fd6a3406e9e5feaa99a85612bb907e3f87e5ef16ef56fca663e4797f
ripemd-160 5bfe2f9591200a43e1f82c6d8ea46c0c7427f759

81542018 as geometric shapes

Circle

Radius = n
Diameter 163084036
Circumference 512343609.41537
Area 2.0888765910567E+16

Sphere

Radius = n
Volume 2.271082834503E+24
Surface area 8.3555063642267E+16
Circumference 512343609.41537

Square

Length = n
Perimeter 326168072
Area 6649100699512324
Diagonal 115317827.75887

Cube

Length = n
Surface area 39894604197073944
Volume 5.4218108892345E+23
Space diagonal 141234918.1277

Equilateral Triangle

Length = n
Perimeter 244626054
Area 2.8791450590493E+15
Altitude 70617459.063848

Triangular Pyramid

Length = n
Surface area 2.8791450590493E+15
Volume 6.3896654101479E+22
Height 38439275.919624