81645246 (number)

81645246 is an even 8-digits composite number following 81645245 and preceding 81645247. In scientific notation, it is written as 8.1645246 × 10^7. The sum of its digits is 36. It has a total of 4 prime factors and 12 positive divisors. There are 27215028 positive integers (up to 81645246) that are relatively prime to 81645246.

Interesting facts

Basic properties

Name

Name eighty-one million six hundred forty-five thousand two hundred forty-six

Notation

Scientific notation 8.1645246 × 10^7
Engineering notation 8.1645246 × 10^6

Prime Factorization of 81645246

Prime Factorization 2 × 9 × 9 × 503983

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 9071694
Product of the distinct prime numbers

The prime factorization of 81645246 is 2 × 9 × 9 × 503983. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 3, 15, 45, 750, 154, 9002, 8567, 49270, 94020, 472424, 940338, 7748265, 906286, 94234318, 77513265, 373288215, 757581809, 3673270183, 6108415797

Basic calculations (n = 81645246)

Multiplication

n×y
n×2 163290492
n×3 244935738
n×4 326580984
n×5 408226230

Division

n÷y
n÷2 40822623
n÷3 27215082
n÷3 20411311.5
n÷5 16329049.2

Exponentiation

ny
n2 6665946194400516
n3 5.4424281686459E+23
n4 4.4434838666643E+31
n5 3.6278933339084E+39

Nth Root

y√n
2√n 9035.7758936353
3√n 433.82072982783
4√n 95.056698310194
5√n 38.228405177192

Divisors of 81645246

1, 2, 9, 18, 81, 162, 503983, 1007966, 4535847, 9071694, 40822623, 81645246

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 -81645245
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 81645246 can be divided by 12 positive divisors. The sum of these divisors (counting 81645246) is 1, the average is 0.083333333333333.

Base conversion 81645246

Base System Value
2 Binary 100110111011100111010111110
3 Ternary 12200122000020000
4 Quaternary 10313130322332
5 Quinary 131400121441
6 Senary 12033535130
8 Octal 467347276
10 Decimal 81645246
12 Duodecimal 234144a6
16 Hexadecimal 4ddcebe
20 Vigesimal 15a5d26
36 Base36 1clxvi

Cryptographic Hash Functions

md5 fcd9c2d87be3b9b52c8dd2136c7af446
sha1 7ebf116afee667ca3009db42e84ac8048ac801ff
sha256 4fb1d043ab28e5d0fa735946ec3babd4f3a09e265978e04b51eb5a5fbfc4c2e2
sha512 82ff4dd649768d7e252923c2bcfc6408189d8997a17047a7f7788005028ea4e6166b6c398d859ce3e4c0f0e326dd7a8af035a633a40908fe39abd64f795a6bb0
ripemd-160 167b56812f5b9df30e5d5cffcab95447e5061d9d

81645246 as geometric shapes

Circle

Radius = n
Diameter 163290492
Circumference 512992210.06826
Area 2.0941687593554E+16

Sphere

Radius = n
Volume 2.2797189803078E+24
Surface area 8.3766750374214E+16
Circumference 512992210.06826

Square

Length = n
Perimeter 326580984
Area 6665946194400516
Diagonal 115463814.19649

Cube

Length = n
Surface area 39995677166403096
Volume 5.4424281686459E+23
Space diagonal 141413714.26846

Equilateral Triangle

Length = n
Perimeter 244935738
Area 2.8864393723055E+15
Altitude 70706857.13423

Triangular Pyramid

Length = n
Surface area 2.8864393723055E+15
Volume 6.4139631069504E+22
Height 38487938.065496