81661593 (number)

81661593 is an odd 8-digits composite number following 81661592 and preceding 81661594. In scientific notation, it is written as 8.1661593 × 10^7. The sum of its digits is 39. It has a total of 5 prime factors and 32 positive divisors. There are 47980800 positive integers (up to 81661593) that are relatively prime to 81661593.

Interesting facts

Basic properties

Name

Name eighty-one million six hundred sixty-one thousand five hundred ninety-three

Notation

Scientific notation 8.1661593 × 10^7
Engineering notation 8.1661593 × 10^6

Prime Factorization of 81661593

Prime Factorization 3 × 13 × 29 × 103 × 701

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81661593
Product of the distinct prime numbers

The prime factorization of 81661593 is 3 × 13 × 29 × 103 × 701. Since it has a total of 5 prime factors.

Most popular turbo-numbers

4, 7, 66, 82, 398, 229, 7164, 4621, 54567, 70346, 294063, 960689, 391290, 6056045, 72143657, 76043696, 576705379, 394252565, 4510700262, 2766606318

Basic calculations (n = 81661593)

Multiplication

n×y
n×2 163323186
n×3 244984779
n×4 326646372
n×5 408307965

Division

n÷y
n÷2 40830796.5
n÷3 27220531
n÷3 20415398.25
n÷5 16332318.6

Exponentiation

ny
n2 6668615771297649
n3 5.4456978698909E+23
n4 4.44704363052E+31
n5 3.6315266700876E+39

Nth Root

y√n
2√n 9036.680419269
3√n 433.84968107146
4√n 95.061456012776
5√n 38.229935871819

Divisors of 81661593

1, 3, 13, 29, 39, 87, 103, 309, 377, 701, 1131, 1339, 2103, 2987, 4017, 8961, 9113, 20329, 27339, 38831, 60987, 72203, 116493, 216609, 264277, 792831, 938639, 2093887, 2815917, 6281661, 27220531, 81661593

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81661592
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81661593 can be divided by 32 positive divisors. The sum of these divisors (counting 81661593) is 1, the average is 0.03125.

Base conversion 81661593

Base System Value
2 Binary 100110111100000111010011001
3 Ternary 12200122211122110
4 Quaternary 10313200322121
5 Quinary 131401132333
6 Senary 12034142533
8 Octal 467407231
10 Decimal 81661593
12 Duodecimal 23421a49
16 Hexadecimal 4de0e99
20 Vigesimal 15a7djd
36 Base36 1cmahl

Cryptographic Hash Functions

md5 d40d6ccfe911fde3aeb03ca2b7ed77f0
sha1 ac773b1f13bc78af6df65b5899b174a6ac161c4a
sha256 a359d9eee8ca942111f2e10e99f8cda2840175e5431a1a44466e7c2d863fffcf
sha512 b0ccaffc75b8d336768f39b266ef704759ea0c535b742444fb05f3ff2d7ae1e764b8882f1674c7030e0620800f718bbfe5f284992446b5bbec7bbfdeb2d00770
ripemd-160 0122a85ff932ffeb6357557b11326b9d6468b5d1

81661593 as geometric shapes

Circle

Radius = n
Diameter 163323186
Circumference 513094921.29848
Area 2.0950074316722E+16

Sphere

Radius = n
Volume 2.2810885895625E+24
Surface area 8.3800297266887E+16
Circumference 513094921.29848

Square

Length = n
Perimeter 326646372
Area 6668615771297649
Diagonal 115486932.34559

Cube

Length = n
Surface area 40011694627785894
Volume 5.4456978698909E+23
Space diagonal 141442028.10301

Equilateral Triangle

Length = n
Perimeter 244984779
Area 2.8875953330107E+15
Altitude 70721014.051505

Triangular Pyramid

Length = n
Surface area 2.8875953330107E+15
Volume 6.4178164868217E+22
Height 38495644.115197