81427720 (number)

81427720 is an even 8-digits composite number following 81427719 and preceding 81427721. In scientific notation, it is written as 8.1427720 × 10^7. The sum of its digits is 31. It has a total of 5 prime factors and 16 positive divisors. There are 29609920 positive integers (up to 81427720) that are relatively prime to 81427720.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred twenty-seven thousand seven hundred twenty

Notation

Scientific notation 8.1427720 × 10^7
Engineering notation 8.1427720 × 10^6

Prime Factorization of 81427720

Prime Factorization 2 × 2 × 2 × 55 × 185063

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 20356930
Product of the distinct prime numbers

The prime factorization of 81427720 is 2 × 2 × 2 × 55 × 185063. Since it has a total of 5 prime factors.

Most popular turbo-numbers

4, 4, 91, 85, 203, 591, 3420, 2033, 91768, 95395, 639544, 885628, 2909204, 3244602, 7795853, 20439490, 78883028, 447333963, 5948357623, 8626990189

Basic calculations (n = 81427720)

Multiplication

n×y
n×2 162855440
n×3 244283160
n×4 325710880
n×5 407138600

Division

n÷y
n÷2 40713860
n÷3 27142573.333333
n÷3 20356930
n÷5 16285544

Exponentiation

ny
n2 6630473584398400
n3 5.3990434649779E+23
n4 4.3963179953405E+31
n5 3.5798215075555E+39

Nth Root

y√n
2√n 9023.730935705
3√n 433.43511350187
4√n 94.993320479416
5√n 38.208013179408

Divisors of 81427720

1, 2, 4, 8, 55, 110, 220, 440, 185063, 370126, 740252, 1480504, 10178465, 20356930, 40713860, 81427720

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 -81427719
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 81427720 can be divided by 16 positive divisors. The sum of these divisors (counting 81427720) is 1, the average is 0.0625.

Base conversion 81427720

Base System Value
2 Binary 100110110100111110100001000
3 Ternary 12200012221211111
4 Quaternary 10312213310020
5 Quinary 131321141340
6 Senary 12025140104
8 Octal 466476410
10 Decimal 81427720
12 Duodecimal 2332a634
16 Hexadecimal 4da7d08
20 Vigesimal 158i960
36 Base36 1cha14

Cryptographic Hash Functions

md5 710e007a8d187d0dde28c6a8f98c563d
sha1 63a82b2c6b1b93a9b8d9c089bb7b14f27206387a
sha256 9aa45d03aed5655afff019f6aa1258cf2507da86734cc9a4ac563b6f0e21183f
sha512 8fb425709b04244a5abd3396ac6aa1feb115532a02982f828398c5e42c3fd1d1046a513ac705cdc2507e2da3f6457ee46513006251ba129e28d8a473e3602875
ripemd-160 5b4c62a8db68b23656ef54107aa40965a3d1057c

81427720 as geometric shapes

Circle

Radius = n
Diameter 162855440
Circumference 511625453.90113
Area 2.0830247102567E+16

Sphere

Radius = n
Volume 2.2615460381315E+24
Surface area 8.3320988410269E+16
Circumference 511625453.90113

Square

Length = n
Perimeter 325710880
Area 6630473584398400
Diagonal 115156185.97712

Cube

Length = n
Surface area 39782841506390400
Volume 5.3990434649779E+23
Space diagonal 141036948.18449

Equilateral Triangle

Length = n
Perimeter 244283160
Area 2.8710792816053E+15
Altitude 70518474.092246

Triangular Pyramid

Length = n
Surface area 2.8710792816053E+15
Volume 6.3628337433446E+22
Height 38385395.325706