81666338 (number)

81666338 is an even 8-digits composite number following 81666337 and preceding 81666339. In scientific notation, it is written as 8.1666338 × 10^7. The sum of its digits is 41. It has a total of 4 prime factors and 16 positive divisors. There are 36475920 positive integers (up to 81666338) that are relatively prime to 81666338.

Interesting facts

Basic properties

Name

Name eighty-one million six hundred sixty-six thousand three hundred thirty-eight

Notation

Scientific notation 8.1666338 × 10^7
Engineering notation 8.1666338 × 10^6

Prime Factorization of 81666338

Prime Factorization 2 × 31 × 13 × 101323

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81666338
Product of the distinct prime numbers

The prime factorization of 81666338 is 2 × 31 × 13 × 101323. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 1, 30, 18, 60, 203, 2102, 9790, 70480, 14063, 954932, 471485, 1157764, 8800036, 13410021, 50342455, 393163997, 429033058, 3455837941, 5878330965

Basic calculations (n = 81666338)

Multiplication

n×y
n×2 163332676
n×3 244999014
n×4 326665352
n×5 408331690

Division

n÷y
n÷2 40833169
n÷3 27222112.666667
n÷3 20416584.5
n÷5 16333267.6

Exponentiation

ny
n2 6669390762330244
n3 5.4466472025054E+23
n4 4.4480773140656E+31
n5 3.6325818538061E+39

Nth Root

y√n
2√n 9036.9429565534
3√n 433.85808394806
4√n 95.062836884628
5√n 38.230380136553

Divisors of 81666338

1, 2, 13, 26, 31, 62, 403, 806, 101323, 202646, 1317199, 2634398, 3141013, 6282026, 40833169, 81666338

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 -81666337
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 81666338 can be divided by 16 positive divisors. The sum of these divisors (counting 81666338) is 1, the average is 0.0625.

Base conversion 81666338

Base System Value
2 Binary 100110111100010000100100010
3 Ternary 12200200002011012
4 Quaternary 10313202010202
5 Quinary 131401310323
6 Senary 12034220522
8 Octal 467420442
10 Decimal 81666338
12 Duodecimal 23424742
16 Hexadecimal 4de2122
20 Vigesimal 15a85gi
36 Base36 1cme5e

Cryptographic Hash Functions

md5 ad2e2acd0f342a9c76a97f41cde0d3b3
sha1 7f58a50366bc9da2be65eb2d3e1b248f51e61b81
sha256 5d18fb75c75561f64cd8cc313d0b5245d41cefbe47f44020f8e00cda1cbd8993
sha512 35954b9a5f1cfb2c5ef0851222b34c47591f66338015470304de1bd96e3fc77f85e6a68db51356c86fb6bc528eed28912351760dc22d3ac1855ddbeda98d03cb
ripemd-160 35365c2a2757ed9506dffef6753becfb876c30a6

81666338 as geometric shapes

Circle

Radius = n
Diameter 163332676
Circumference 513124735.01276
Area 2.0952509022856E+16

Sphere

Radius = n
Volume 2.2814862450782E+24
Surface area 8.3810036091425E+16
Circumference 513124735.01276

Square

Length = n
Perimeter 326665352
Area 6669390762330244
Diagonal 115493642.78895

Cube

Length = n
Surface area 40016344573981464
Volume 5.4466472025054E+23
Space diagonal 141450246.68409

Equilateral Triangle

Length = n
Perimeter 244999014
Area 2.8879309139716E+15
Altitude 70725123.342046

Triangular Pyramid

Length = n
Surface area 2.8879309139716E+15
Volume 6.4189352860372E+22
Height 38497880.929648