81553668 (number)

81553668 is an even 8-digits composite number following 81553667 and preceding 81553669. In scientific notation, it is written as 8.1553668 × 10^7. The sum of its digits is 42. It has a total of 4 prime factors and 12 positive divisors. There are 23301024 positive integers (up to 81553668) that are relatively prime to 81553668.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred fifty-three thousand six hundred sixty-eight

Notation

Scientific notation 8.1553668 × 10^7
Engineering notation 8.1553668 × 10^6

Prime Factorization of 81553668

Prime Factorization 2 × 2 × 21 × 970877

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 40776834
Product of the distinct prime numbers

The prime factorization of 81553668 is 2 × 2 × 21 × 970877. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 9, 74, 50, 687, 291, 2397, 9749, 1090, 90971, 798366, 31534, 6993343, 3985136, 16292978, 67690824, 886943014, 795127424, 9754099730, 8170487383

Basic calculations (n = 81553668)

Multiplication

n×y
n×2 163107336
n×3 244661004
n×4 326214672
n×5 407768340

Division

n÷y
n÷2 40776834
n÷3 27184556
n÷3 20388417
n÷5 16310733.6

Exponentiation

ny
n2 6651000764254224
n3 5.4241350819574E+23
n4 4.423581116611E+31
n5 3.6075926575517E+39

Nth Root

y√n
2√n 9030.706949071
3√n 433.65846972531
4√n 95.03003182716
5√n 38.2198254917

Divisors of 81553668

1, 2, 4, 21, 42, 84, 970877, 1941754, 3883508, 20388417, 40776834, 81553668

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 -81553667
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 81553668 can be divided by 12 positive divisors. The sum of these divisors (counting 81553668) is 1, the average is 0.083333333333333.

Base conversion 81553668

Base System Value
2 Binary 100110111000110100100000100
3 Ternary 12200110100121020
4 Quaternary 10313012210010
5 Quinary 131334204133
6 Senary 12031551140
8 Octal 467064404
10 Decimal 81553668
12 Duodecimal 2338b4b0
16 Hexadecimal 4dc6904
20 Vigesimal 159e438
36 Base36 1cjz7o

Cryptographic Hash Functions

md5 27f432b00db50415457e1848fe512146
sha1 b7998a6fd72014fdfed7008d94402196f074548d
sha256 2b9b1f0963f8800bb51343e23d2f48a8dbbb89d89816454d7b840349754c6ab4
sha512 c1fae323fd70832ba933ff77c21c8b0276b6edfbc7f3df9f20b36a46fe987cd9b8a15bde1a3ef81a4535194c6413ed66e53af616374240e031302f3b951d490f
ripemd-160 4831353dc22f5bcf72b811a325babbe95eff1480

81553668 as geometric shapes

Circle

Radius = n
Diameter 163107336
Circumference 512416808.5242
Area 2.0894735140001E+16

Sphere

Radius = n
Volume 2.2720563900741E+24
Surface area 8.3578940560005E+16
Circumference 512416808.5242

Square

Length = n
Perimeter 326214672
Area 6651000764254224
Diagonal 115334303.34687

Cube

Length = n
Surface area 39906004585525344
Volume 5.4241350819574E+23
Space diagonal 141255096.5196

Equilateral Triangle

Length = n
Perimeter 244661004
Area 2.8799678112169E+15
Altitude 70627548.259802

Triangular Pyramid

Length = n
Surface area 2.8799678112169E+15
Volume 6.3924044975398E+22
Height 38444767.782291