81217764 (number)

81217764 is an even 8-digits composite number following 81217763 and preceding 81217765. In scientific notation, it is written as 8.1217764 × 10^7. The sum of its digits is 36. It has a total of 5 prime factors and 18 positive divisors. There are 27072576 positive integers (up to 81217764) that are relatively prime to 81217764.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred seventeen thousand seven hundred sixty-four

Notation

Scientific notation 8.1217764 × 10^7
Engineering notation 8.1217764 × 10^6

Prime Factorization of 81217764

Prime Factorization 2 × 2 × 3 × 3 × 2256049

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 13536294
Product of the distinct prime numbers

The prime factorization of 81217764 is 2 × 2 × 3 × 3 × 2256049. Since it has a total of 5 prime factors.

Most popular turbo-numbers

4, 7, 90, 74, 99, 237, 2254, 1351, 96497, 59428, 671685, 288319, 1110973, 7651487, 22413410, 23578229, 209328699, 927172790, 4800269863, 9193776384

Basic calculations (n = 81217764)

Multiplication

n×y
n×2 162435528
n×3 243653292
n×4 324871056
n×5 406088820

Division

n÷y
n÷2 40608882
n÷3 27072588
n÷3 20304441
n÷5 16243552.8

Exponentiation

ny
n2 6596325189159696
n3 5.3573878248043E+23
n4 4.3511506001143E+31
n5 3.5339072256854E+39

Nth Root

y√n
2√n 9012.0898797116
3√n 433.06226492157
4√n 94.93202768145
5√n 38.188289458496

Divisors of 81217764

1, 2, 3, 4, 6, 9, 12, 18, 36, 2256049, 4512098, 6768147, 9024196, 13536294, 20304441, 27072588, 40608882, 81217764

18 divisors

τ Total Divisors 18
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81217763
Sum of the proper positive divisors of n
A Arithmetic Mean 0.055555555555556
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 18
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81217764 can be divided by 18 positive divisors. The sum of these divisors (counting 81217764) is 1, the average is 0.055555555555556.

Base conversion 81217764

Base System Value
2 Binary 100110101110100100011100100
3 Ternary 12122211021211100
4 Quaternary 10311310203210
5 Quinary 131242432024
6 Senary 12020440100
8 Octal 465644344
10 Decimal 81217764
12 Duodecimal 23249030
16 Hexadecimal 4d748e4
20 Vigesimal 157c484
36 Base36 1ccs10

Cryptographic Hash Functions

md5 127b7c78702a2dbc4707b53accfe3d75
sha1 43b809cdfb8a744e9e32fbbbd5895a44cc1f82f5
sha256 a96b72afa99c4a40ee08cfbcc8a790d79bd8ba525aa9e783da56d4ac221514a7
sha512 f1c7d921e65e8b89d19881e5da4c782b6b5cef9ced1d28eba29dcbe04dd93451bc4036e97760faad2c6fb909e9f78d10075cbd655e695e7c91c97953338b50ca
ripemd-160 ce4cef0ba8e281add81af1df25bc8899a3c71bad

81217764 as geometric shapes

Circle

Radius = n
Diameter 162435528
Circumference 510306261.44678
Area 2.0722966754953E+16

Sphere

Radius = n
Volume 2.2440973643782E+24
Surface area 8.2891867019814E+16
Circumference 510306261.44678

Square

Length = n
Perimeter 324871056
Area 6596325189159696
Diagonal 114859263.35442

Cube

Length = n
Surface area 39577951134958176
Volume 5.3573878248043E+23
Space diagonal 140673293.72514

Equilateral Triangle

Length = n
Perimeter 243653292
Area 2.8562925927177E+15
Altitude 70336646.862569

Triangular Pyramid

Length = n
Surface area 2.8562925927177E+15
Volume 6.3137421006089E+22
Height 38286421.118139