81491694 (number)

81491694 is an even 8-digits composite number following 81491693 and preceding 81491695. In scientific notation, it is written as 8.1491694 × 10^7. The sum of its digits is 42. It has a total of 5 prime factors and 32 positive divisors. There are 26769600 positive integers (up to 81491694) that are relatively prime to 81491694.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred ninety-one thousand six hundred ninety-four

Notation

Scientific notation 8.1491694 × 10^7
Engineering notation 8.1491694 × 10^6

Prime Factorization of 81491694

Prime Factorization 2 × 3 × 131 × 521 × 199

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81491694
Product of the distinct prime numbers

The prime factorization of 81491694 is 2 × 3 × 131 × 521 × 199. Since it has a total of 5 prime factors.

Most popular turbo-numbers

2, 10, 80, 44, 201, 377, 757, 9883, 62148, 54781, 803098, 717134, 4574155, 72882, 54299145, 53817793, 311249938, 788813086, 6562228406, 5253734541

Basic calculations (n = 81491694)

Multiplication

n×y
n×2 162983388
n×3 244475082
n×4 325966776
n×5 407458470

Division

n÷y
n÷2 40745847
n÷3 27163898
n÷3 20372923.5
n÷5 16298338.8

Exponentiation

ny
n2 6640896190989636
n3 5.4117788028189E+23
n4 4.4101502219501E+31
n5 3.5939061238119E+39

Nth Root

y√n
2√n 9027.2750041195
3√n 433.54859377383
4√n 95.01197295141
5√n 38.214014947949

Divisors of 81491694

1, 2, 3, 6, 131, 199, 262, 393, 398, 521, 597, 786, 1042, 1194, 1563, 3126, 26069, 52138, 68251, 78207, 103679, 136502, 156414, 204753, 207358, 311037, 409506, 622074, 13581949, 27163898, 40745847, 81491694

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81491693
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81491694 can be divided by 32 positive divisors. The sum of these divisors (counting 81491694) is 1, the average is 0.03125.

Base conversion 81491694

Base System Value
2 Binary 100110110110111011011101110
3 Ternary 12200100012120220
4 Quaternary 10312313123232
5 Quinary 131330213234
6 Senary 12030352210
8 Octal 466673356
10 Decimal 81491694
12 Duodecimal 2335b666
16 Hexadecimal 4db76ee
20 Vigesimal 159694e
36 Base36 1cine6

Cryptographic Hash Functions

md5 c2927184824b7dbb258d512b6bbaf5c9
sha1 835a9518486fb8d220f49579fe9c6986e041d463
sha256 deecea0a4c822b6c041a6fb3605e045ee30e2e626cab6d9118e70476565b03c8
sha512 959a88276b5786c57fbc00943e245e667b6784ccfedf1513ea4a5302855926fd31a17300c7a7a25d0e323ef9d862e5e62281dca62c719350a111c2a254f656ec
ripemd-160 83e24764e8433ea910cb61c280ab9179bab7fe00

81491694 as geometric shapes

Circle

Radius = n
Diameter 162983388
Circumference 512027414.39797
Area 2.0862990686865E+16

Sphere

Radius = n
Volume 2.2668806039719E+24
Surface area 8.3451962747462E+16
Circumference 512027414.39797

Square

Length = n
Perimeter 325966776
Area 6640896190989636
Diagonal 115246658.87556

Cube

Length = n
Surface area 39845377145937816
Volume 5.4117788028189E+23
Space diagonal 141147754.40286

Equilateral Triangle

Length = n
Perimeter 244475082
Area 2.8755924026462E+15
Altitude 70573877.201428

Triangular Pyramid

Length = n
Surface area 2.8755924026462E+15
Volume 6.3778424829248E+22
Height 38415552.958519