81264420 (number)

81264420 is an even 8-digits composite number following 81264419 and preceding 81264421. In scientific notation, it is written as 8.1264420 × 10^7. The sum of its digits is 27. It has a total of 5 prime factors and 24 positive divisors. There are 20395008 positive integers (up to 81264420) that are relatively prime to 81264420.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred sixty-four thousand four hundred twenty

Notation

Scientific notation 8.1264420 × 10^7
Engineering notation 8.1264420 × 10^6

Prime Factorization of 81264420

Prime Factorization 2 × 2 × 85 × 9 × 26557

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40632210
Product of the distinct prime numbers

The prime factorization of 81264420 is 2 × 2 × 85 × 9 × 26557. Since it has a total of 5 prime factors.

Most popular turbo-numbers

4, 10, 77, 33, 432, 325, 1014, 9434, 25568, 9310, 288512, 499612, 580597, 5825637, 89866572, 86137543, 591322587, 767356782, 7363403731, 3503487743

Basic calculations (n = 81264420)

Multiplication

n×y
n×2 162528840
n×3 243793260
n×4 325057680
n×5 406322100

Division

n÷y
n÷2 40632210
n÷3 27088140
n÷3 20316105
n÷5 16252884

Exponentiation

ny
n2 6603905957936400
n3 5.3666258740625E+23
n4 4.3611573901268E+31
n5 3.5440692583737E+39

Nth Root

y√n
2√n 9014.6780308561
3√n 433.14517406329
4√n 94.945658304401
5√n 38.192675946083

Divisors of 81264420

1, 2, 4, 9, 18, 36, 85, 170, 340, 765, 1530, 3060, 26557, 53114, 106228, 239013, 478026, 956052, 2257345, 4514690, 9029380, 20316105, 40632210, 81264420

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81264419
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81264420 can be divided by 24 positive divisors. The sum of these divisors (counting 81264420) is 1, the average is 0.041666666666667.

Base conversion 81264420

Base System Value
2 Binary 100110101111111111100100100
3 Ternary 12122220122211100
4 Quaternary 10311333330210
5 Quinary 131300430140
6 Senary 12021440100
8 Octal 465777444
10 Decimal 81264420
12 Duodecimal 23270030
16 Hexadecimal 4d7ff24
20 Vigesimal 157i110
36 Base36 1cds10

Cryptographic Hash Functions

md5 207eebef5f396b1d5ed707f4069d5c34
sha1 68c489eb9559be18c88f41d601d7bd16037fbdbc
sha256 573520b09e35b2035b671c407c3cc80a473fe254f487ceefa56eedf91f386a30
sha512 b9ea0f9bc6dd58f702d3585a832e5cd6b116f7c01978cd327fbf7dc61e890761c0f4556e1cc013af2a6bf991fdc5c76da548c46526d24306d6c2cae4fbe87829
ripemd-160 578b7e40b29d4b6f26c9b8565261c26f8e9afebe

81264420 as geometric shapes

Circle

Radius = n
Diameter 162528840
Circumference 510599409.74047
Area 2.0746782442451E+16

Sphere

Radius = n
Volume 2.2479669894026E+24
Surface area 8.2987129769803E+16
Circumference 510599409.74047

Square

Length = n
Perimeter 325057680
Area 6603905957936400
Diagonal 114925244.90238

Cube

Length = n
Surface area 39623435747618400
Volume 5.3666258740625E+23
Space diagonal 140754104.28762

Equilateral Triangle

Length = n
Perimeter 243793260
Area 2.8595751618882E+15
Altitude 70377052.143808

Triangular Pyramid

Length = n
Surface area 2.8595751618882E+15
Volume 6.3246292460679E+22
Height 38308414.967461