81268644 (number)

81268644 is an even 8-digits composite number following 81268643 and preceding 81268645. In scientific notation, it is written as 8.1268644 × 10^7. The sum of its digits is 39. It has a total of 4 prime factors and 12 positive divisors. There are 27089544 positive integers (up to 81268644) that are relatively prime to 81268644.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred sixty-eight thousand six hundred forty-four

Notation

Scientific notation 8.1268644 × 10^7
Engineering notation 8.1268644 × 10^6

Prime Factorization of 81268644

Prime Factorization 2 × 2 × 3 × 6772387

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 40634322
Product of the distinct prime numbers

The prime factorization of 81268644 is 2 × 2 × 3 × 6772387. Since it has a total of 4 prime factors.

Most popular turbo-numbers

9, 6, 44, 99, 683, 878, 8707, 9497, 11088, 96609, 769687, 144624, 2813109, 5383761, 73235147, 11534231, 984612220, 818270557, 6263490734, 2148156332

Basic calculations (n = 81268644)

Multiplication

n×y
n×2 162537288
n×3 243805932
n×4 325074576
n×5 406343220

Division

n÷y
n÷2 40634322
n÷3 27089548
n÷3 20317161
n÷5 16253728.8

Exponentiation

ny
n2 6604592497598736
n3 5.3674627645242E+23
n4 4.3620642059338E+31
n5 3.5449904305717E+39

Nth Root

y√n
2√n 9014.9123123855
3√n 433.15267867402
4√n 94.946892062803
5√n 38.19307297718

Divisors of 81268644

1, 2, 3, 4, 6, 12, 6772387, 13544774, 20317161, 27089548, 40634322, 81268644

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 -81268643
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 81268644 can be divided by 12 positive divisors. The sum of these divisors (counting 81268644) is 1, the average is 0.083333333333333.

Base conversion 81268644

Base System Value
2 Binary 100110110000000111110100100
3 Ternary 12122220212121210
4 Quaternary 10312000332210
5 Quinary 131301044034
6 Senary 12021511420
8 Octal 466007644
10 Decimal 81268644
12 Duodecimal 23272570
16 Hexadecimal 4d80fa4
20 Vigesimal 157ibc4
36 Base36 1cdvac

Cryptographic Hash Functions

md5 02d7fe3f11200206429a284dc5bca1f6
sha1 2ac65a681d13396288595be0ad640c9edcc67d8a
sha256 3af07dbf4dc1bfc716579d835732bb15ec81b20f7e0ef32dd564c50394154c47
sha512 5abb021362e957a7bdcb7aef2d86d17e9697af26635c8ea0bbfd942108a3fd429dd5a9cf006ccf7d7a778803aba73faacce2a9b93ed22edc09fb69711bcbc4d8
ripemd-160 c4ba078ddbfda5053d6d4be3385b842da9645f79

81268644 as geometric shapes

Circle

Radius = n
Diameter 162537288
Circumference 510625949.91521
Area 2.074893927041E+16

Sphere

Radius = n
Volume 2.2483175452595E+24
Surface area 8.2995757081642E+16
Circumference 510625949.91521

Square

Length = n
Perimeter 325074576
Area 6604592497598736
Diagonal 114931218.54047

Cube

Length = n
Surface area 39627554985592416
Volume 5.3674627645242E+23
Space diagonal 140761420.47023

Equilateral Triangle

Length = n
Perimeter 243805932
Area 2.8598724422823E+15
Altitude 70380710.235114

Triangular Pyramid

Length = n
Surface area 2.8598724422823E+15
Volume 6.3256155309356E+22
Height 38310406.180157