81582021 (number)

81582021 is an odd 8-digits composite number following 81582020 and preceding 81582022. In scientific notation, it is written as 8.1582021 × 10^7. The sum of its digits is 27. It has a total of 4 prime factors and 12 positive divisors. There are 54102120 positive integers (up to 81582021) that are relatively prime to 81582021.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred eighty-two thousand twenty-one

Notation

Scientific notation 8.1582021 × 10^7
Engineering notation 8.1582021 × 10^6

Prime Factorization of 81582021

Prime Factorization 3 × 3 × 191 × 47459

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 27194007
Product of the distinct prime numbers

The prime factorization of 81582021 is 3 × 3 × 191 × 47459. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 4, 71, 44, 746, 263, 2845, 2644, 75860, 84272, 774039, 769196, 6438976, 3572608, 98160897, 57088741, 349099129, 729994032, 3942767622, 1934231099

Basic calculations (n = 81582021)

Multiplication

n×y
n×2 163164042
n×3 244746063
n×4 326328084
n×5 407910105

Division

n÷y
n÷2 40791010.5
n÷3 27194007
n÷3 20395505.25
n÷5 16316404.2

Exponentiation

ny
n2 6655626150444441
n3 5.4297943237371E+23
n4 4.429735945448E+31
n5 3.6138681092599E+39

Nth Root

y√n
2√n 9032.2766233104
3√n 433.70871922882
4√n 95.038290300859
5√n 38.222482627973

Divisors of 81582021

1, 3, 9, 191, 573, 1719, 47459, 142377, 427131, 9064669, 27194007, 81582021

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81582020
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81582021 can be divided by 12 positive divisors. The sum of these divisors (counting 81582021) is 1, the average is 0.083333333333333.

Base conversion 81582021

Base System Value
2 Binary 100110111001101011111000101
3 Ternary 12200111210111100
4 Quaternary 10313031133011
5 Quinary 131341111041
6 Senary 12032330313
8 Octal 467153705
10 Decimal 81582021
12 Duodecimal 233a3999
16 Hexadecimal 4dcd7c5
20 Vigesimal 159hf11
36 Base36 1ckl39

Cryptographic Hash Functions

md5 578a30df015344e2438d1899f4256a1f
sha1 54914533eb5f454a8cad696c0d17bd92095fa09e
sha256 d1fcf6a236f7685c22c55b368ba18fb7dc7d2efb875caea2f060f990f9601462
sha512 bed9ca4c42885318539e362533f4ef6777a3abcb08d174a2434a1a6667ecdf336474c67650ab21c7d3c39eeebf908c2fb27394785b30aff2bd9fe16cf580cbc7
ripemd-160 454a81f8c3000aa495353d16c4873297c23d8dd1

81582021 as geometric shapes

Circle

Radius = n
Diameter 163164042
Circumference 512594955.67722
Area 2.0909266219276E+16

Sphere

Radius = n
Volume 2.2744269277275E+24
Surface area 8.3637064877105E+16
Circumference 512594955.67722

Square

Length = n
Perimeter 326328084
Area 6655626150444441
Diagonal 115374400.54401

Cube

Length = n
Surface area 39933756902666646
Volume 5.4297943237371E+23
Space diagonal 141304205.35615

Equilateral Triangle

Length = n
Perimeter 244746063
Area 2.8819706621885E+15
Altitude 70652102.678076

Triangular Pyramid

Length = n
Surface area 2.8819706621885E+15
Volume 6.3990739779379E+22
Height 38458133.514669