81993863 (number)

81993863 is an odd 8-digits composite number following 81993862 and preceding 81993864. In scientific notation, it is written as 8.1993863 × 10^7. The sum of its digits is 47. It has a total of 4 prime factors and 16 positive divisors. There are 68324256 positive integers (up to 81993863) that are relatively prime to 81993863.

Interesting facts

Basic properties

Name

Name eighty-one million nine hundred ninety-three thousand eight hundred sixty-three

Notation

Scientific notation 8.1993863 × 10^7
Engineering notation 8.1993863 × 10^6

Prime Factorization of 81993863

Prime Factorization 7 × 79 × 67 × 2213

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81993863
Product of the distinct prime numbers

The prime factorization of 81993863 is 7 × 79 × 67 × 2213. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 6, 69, 34, 617, 138, 7318, 3878, 37220, 91804, 151833, 830276, 7876024, 3704023, 73498394, 89899810, 528806070, 897912480, 6787827566, 914541524

Basic calculations (n = 81993863)

Multiplication

n×y
n×2 163987726
n×3 245981589
n×4 327975452
n×5 409969315

Division

n÷y
n÷2 40996931.5
n÷3 27331287.666667
n÷3 20498465.75
n÷5 16398772.6

Exponentiation

ny
n2 6722993569662769
n3 5.5124421370081E+23
n4 4.5198642537727E+31
n5 3.7060113040244E+39

Nth Root

y√n
2√n 9055.0462726592
3√n 434.43731006139
4√n 95.158006876244
5√n 38.260995851156

Divisors of 81993863

1, 7, 67, 79, 469, 553, 2213, 5293, 15491, 37051, 148271, 174827, 1037897, 1223789, 11713409, 81993863

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 -81993862
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 81993863 can be divided by 16 positive divisors. The sum of these divisors (counting 81993863) is 1, the average is 0.0625.

Base conversion 81993863

Base System Value
2 Binary 100111000110010000010000111
3 Ternary 12201021201102202
4 Quaternary 10320302002013
5 Quinary 131442300423
6 Senary 12045225115
8 Octal 470620207
10 Decimal 81993863
12 Duodecimal 2356219b
16 Hexadecimal 4e32087
20 Vigesimal 15c94d3
36 Base36 1ctevb

Cryptographic Hash Functions

md5 d438328908cb7748d5a3c83aba03283d
sha1 4b97790a73c084d15b4f119b01195fa1547c24fd
sha256 5fcb8424278e7c7489fee9c608afdb5e9a62ef31ab99d83dab357ca49e8d2ddb
sha512 fff7adc0171f484453677f5851e7b6c3ceafbd81e55c034fe83a982c2603494ed95bfa3539cb3d1637cb5fd3a9efae9b287b072374dd13a0f82fd5825bf1f326
ripemd-160 a43e10d31e22391b644b014b64c556ae3a86d0fc

81993863 as geometric shapes

Circle

Radius = n
Diameter 163987726
Circumference 515182635.2805
Area 2.1120907208584E+16

Sphere

Radius = n
Volume 2.3090463627951E+24
Surface area 8.4483628834336E+16
Circumference 515182635.2805

Square

Length = n
Perimeter 327975452
Area 6722993569662769
Diagonal 115956833.08596

Cube

Length = n
Surface area 40337961417976614
Volume 5.5124421370081E+23
Space diagonal 142017536.62484

Equilateral Triangle

Length = n
Perimeter 245981589
Area 2.9111416104037E+15
Altitude 71008768.312421

Triangular Pyramid

Length = n
Surface area 2.9111416104037E+15
Volume 6.4964753599615E+22
Height 38652277.695321