81639225 (number)

81639225 is an odd 8-digits composite number following 81639224 and preceding 81639226. In scientific notation, it is written as 8.1639225 × 10^7. The sum of its digits is 36. It has a total of 6 prime factors and 24 positive divisors. There are 43540560 positive integers (up to 81639225) that are relatively prime to 81639225.

Interesting facts

Basic properties

Name

Name eighty-one million six hundred thirty-nine thousand two hundred twenty-five

Notation

Scientific notation 8.1639225 × 10^7
Engineering notation 8.1639225 × 10^6

Prime Factorization of 81639225

Prime Factorization 3 × 3 × 3 × 5 × 5 × 120947

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 1814205
Product of the distinct prime numbers

The prime factorization of 81639225 is 3 × 3 × 3 × 5 × 5 × 120947. Since it has a total of 6 prime factors.

Most popular turbo-numbers

7, 9, 51, 76, 491, 3, 634, 3149, 23845, 72521, 168235, 498599, 8899143, 3873409, 47951222, 38257670, 595111165, 82067746, 7305421039, 8503728130

Basic calculations (n = 81639225)

Multiplication

n×y
n×2 163278450
n×3 244917675
n×4 326556900
n×5 408196125

Division

n÷y
n÷2 40819612.5
n÷3 27213075
n÷3 20409806.25
n÷5 16327845

Exponentiation

ny
n2 6664963058600625
n3 5.4412241875778E+23
n4 4.4421732572511E+31
n5 3.6265558203771E+39

Nth Root

y√n
2√n 9035.4427118985
3√n 433.81006540276
4√n 95.05494575191
5√n 38.227841323131

Divisors of 81639225

1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 225, 675, 120947, 362841, 604735, 1088523, 1814205, 3023675, 3265569, 5442615, 9071025, 16327845, 27213075, 81639225

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81639224
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81639225 can be divided by 24 positive divisors. The sum of these divisors (counting 81639225) is 1, the average is 0.041666666666667.

Base conversion 81639225

Base System Value
2 Binary 100110111011011011100111001
3 Ternary 12200121200222000
4 Quaternary 10313123130321
5 Quinary 131344423400
6 Senary 12033451213
8 Octal 467333471
10 Decimal 81639225
12 Duodecimal 23410b09
16 Hexadecimal 4ddb739
20 Vigesimal 15a4i15
36 Base36 1clt89

Cryptographic Hash Functions

md5 34150478c0d056076eabf84dae93f6a2
sha1 0dcfe896c05f123a1fb06bf481cd5011b5c23233
sha256 3c853fa3bea425088cac4e3cb907d2a8602d4f1aaf55fe0b677fd3b9c006cfa1
sha512 8df808c0d404b6dd53e13f79ac67673a41b399bcfb8a8f833a6229111732d480fce250be79abda9f436b56884fa012446c27afad077d12794ca19aa32e1e318b
ripemd-160 4a13fe11e273141adace66088b616a8efb25d3ca

81639225 as geometric shapes

Circle

Radius = n
Diameter 163278450
Circumference 512954379.00953
Area 2.0938598981347E+16

Sphere

Radius = n
Volume 2.2792146578973E+24
Surface area 8.3754395925388E+16
Circumference 512954379.00953

Square

Length = n
Perimeter 326556900
Area 6664963058600625
Diagonal 115455299.21663

Cube

Length = n
Surface area 39989778351603750
Volume 5.4412241875778E+23
Space diagonal 141403285.59055

Equilateral Triangle

Length = n
Perimeter 244917675
Area 2.8860136620165E+15
Altitude 70701642.795274

Triangular Pyramid

Length = n
Surface area 2.8860136620165E+15
Volume 6.4125442016543E+22
Height 38485099.738876