81998942 (number)

81998942 is an even 8-digits composite number following 81998941 and preceding 81998943. In scientific notation, it is written as 8.1998942 × 10^7. The sum of its digits is 50. It has a total of 3 prime factors and 8 positive divisors. There are 40904352 positive integers (up to 81998942) that are relatively prime to 81998942.

Interesting facts

Basic properties

Name

Name eighty-one million nine hundred ninety-eight thousand nine hundred forty-two

Notation

Scientific notation 8.1998942 × 10^7
Engineering notation 8.1998942 × 10^6

Prime Factorization of 81998942

Prime Factorization 2 × 433 × 94687

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 81998942
Product of the distinct prime numbers

The prime factorization of 81998942 is 2 × 433 × 94687. Since it has a total of 3 prime factors.

Most popular turbo-numbers

10, 3, 65, 79, 655, 360, 5431, 2378, 70503, 80669, 731790, 441542, 4544713, 7029197, 16001826, 74893935, 825924450, 856703902, 308010906, 1431692383

Basic calculations (n = 81998942)

Multiplication

n×y
n×2 163997884
n×3 245996826
n×4 327995768
n×5 409994710

Division

n÷y
n÷2 40999471
n÷3 27332980.666667
n÷3 20499735.5
n÷5 16399788.4

Exponentiation

ny
n2 6723826489119364
n3 5.5134665829936E+23
n4 4.5209842655783E+31
n5 3.7071592657607E+39

Nth Root

y√n
2√n 9055.3267196717
3√n 434.44628008858
4√n 95.159480450829
5√n 38.261469844638

Divisors of 81998942

1, 2, 433, 866, 94687, 189374, 40999471, 81998942

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81998941
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81998942 can be divided by 8 positive divisors. The sum of these divisors (counting 81998942) is 1, the average is 0.125.

Base conversion 81998942

Base System Value
2 Binary 100111000110011010001011110
3 Ternary 12201021222101212
4 Quaternary 10320303101132
5 Quinary 131442431232
6 Senary 12045304422
8 Octal 470632136
10 Decimal 81998942
12 Duodecimal 23565112
16 Hexadecimal 4e3345e
20 Vigesimal 15c9h72
36 Base36 1ctise

Cryptographic Hash Functions

md5 67a9ecbdd42763e3607df4c326bcaca2
sha1 7bbbde1a99fb200c3a4c0e0f73dd50a7eb869479
sha256 53b069d0937841980766ee8969efa7e7e455225c43ef94a4e0602a14941a6f3e
sha512 0346d43f9a2449d3bb0d56d2ed7400558e0648e630b1b13858dd447df5d2000db96681a460b47bc07919a5de45354d691f954a2d19db96fd210b80aa6cb4eaf0
ripemd-160 3b38405ce44913e2120b6c1a65236bdcf9e85e71

81998942 as geometric shapes

Circle

Radius = n
Diameter 163997884
Circumference 515214547.57867
Area 2.112352390223E+16

Sphere

Radius = n
Volume 2.3094754817261E+24
Surface area 8.4494095608919E+16
Circumference 515214547.57867

Square

Length = n
Perimeter 327995768
Area 6723826489119364
Diagonal 115964015.87664

Cube

Length = n
Surface area 40342958934716184
Volume 5.5134665829936E+23
Space diagonal 142026333.71089

Equilateral Triangle

Length = n
Perimeter 245996826
Area 2.9115022751081E+15
Altitude 71013166.855447

Triangular Pyramid

Length = n
Surface area 2.9115022751081E+15
Volume 6.4976826811337E+22
Height 38654671.958882