81749688 (number)

81749688 is an even 8-digits composite number following 81749687 and preceding 81749689. In scientific notation, it is written as 8.1749688 × 10^7. The sum of its digits is 51. It has a total of 6 prime factors and 32 positive divisors. There are 26920928 positive integers (up to 81749688) that are relatively prime to 81749688.

Interesting facts

Basic properties

Name

Name eighty-one million seven hundred forty-nine thousand six hundred eighty-eight

Notation

Scientific notation 8.1749688 × 10^7
Engineering notation 8.1749688 × 10^6

Prime Factorization of 81749688

Prime Factorization 2 × 2 × 2 × 3 × 83 × 41039

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 20437422
Product of the distinct prime numbers

The prime factorization of 81749688 is 2 × 2 × 2 × 3 × 83 × 41039. Since it has a total of 6 prime factors.

Most popular turbo-numbers

9, 2, 53, 55, 591, 379, 7706, 5775, 85267, 16937, 718721, 114845, 5650196, 2041806, 80110630, 12147284, 452300891, 638116951, 2747323924, 5051525920

Basic calculations (n = 81749688)

Multiplication

n×y
n×2 163499376
n×3 245249064
n×4 326998752
n×5 408748440

Division

n÷y
n÷2 40874844
n÷3 27249896
n÷3 20437422
n÷5 16349937.6

Exponentiation

ny
n2 6683011488097344
n3 5.4633410405237E+23
n4 4.4662642550041E+31
n5 3.6511570937214E+39

Nth Root

y√n
2√n 9041.5534063567
3√n 434.00563464691
4√n 95.087083278207
5√n 38.23818066289

Divisors of 81749688

1, 2, 3, 4, 6, 8, 12, 24, 83, 166, 249, 332, 498, 664, 996, 1992, 41039, 82078, 123117, 164156, 246234, 328312, 492468, 984936, 3406237, 6812474, 10218711, 13624948, 20437422, 27249896, 40874844, 81749688

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 -81749687
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 81749688 can be divided by 32 positive divisors. The sum of these divisors (counting 81749688) is 1, the average is 0.03125.

Base conversion 81749688

Base System Value
2 Binary 100110111110110011010111000
3 Ternary 12200211022111020
4 Quaternary 10313312122320
5 Quinary 131411442223
6 Senary 12040102440
8 Octal 467663270
10 Decimal 81749688
12 Duodecimal 23464a20
16 Hexadecimal 4df66b8
20 Vigesimal 15aie48
36 Base36 1co6go

Cryptographic Hash Functions

md5 6f0ab85c31074b78af127398308452ab
sha1 e29f79d070f1a3fe5615331ea8d3221ff899f9a0
sha256 0a6623e52ee6b1dd52bb09151da974875f2697e643274d440bfb07f2b74146ae
sha512 3bbcfec54550da8f5d011e6b4fb5bd5fd8b27178871fe40a9566a4aaba192f34810ddd9835fc3ac6a18bd9db42d991378a108770dde15298862ead6da545fc91
ripemd-160 583339b9b02d5955067abde0469ba1f9fed6a553

81749688 as geometric shapes

Circle

Radius = n
Diameter 163499376
Circumference 513648438.50812
Area 2.0995299794863E+16

Sphere

Radius = n
Volume 2.2884789435953E+24
Surface area 8.3981199179451E+16
Circumference 513648438.50812

Square

Length = n
Perimeter 326998752
Area 6683011488097344
Diagonal 115611517.48937

Cube

Length = n
Surface area 40098068928584064
Volume 5.4633410405237E+23
Space diagonal 141594613.1189

Equilateral Triangle

Length = n
Perimeter 245249064
Area 2.8938288612378E+15
Altitude 70797306.559452

Triangular Pyramid

Length = n
Surface area 2.8938288612378E+15
Volume 6.4386091628152E+22
Height 38537172.496456