81369916 (number)

81369916 is an even 8-digits composite number following 81369915 and preceding 81369917. In scientific notation, it is written as 8.1369916 × 10^7. The sum of its digits is 43. It has a total of 5 prime factors and 24 positive divisors. There are 39054960 positive integers (up to 81369916) that are relatively prime to 81369916.

Interesting facts

Basic properties

Name

Name eighty-one million three hundred sixty-nine thousand nine hundred sixteen

Notation

Scientific notation 8.1369916 × 10^7
Engineering notation 8.1369916 × 10^6

Prime Factorization of 81369916

Prime Factorization 2 × 2 × 31 × 127 × 5167

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40684958
Product of the distinct prime numbers

The prime factorization of 81369916 is 2 × 2 × 31 × 127 × 5167. Since it has a total of 5 prime factors.

Most popular turbo-numbers

8, 9, 99, 85, 802, 724, 9721, 7864, 67343, 62830, 278227, 621552, 2778372, 6511048, 56871839, 48060981, 761732185, 315277738, 8283202149, 3397932615

Basic calculations (n = 81369916)

Multiplication

n×y
n×2 162739832
n×3 244109748
n×4 325479664
n×5 406849580

Division

n÷y
n÷2 40684958
n÷3 27123305.333333
n÷3 20342479
n÷5 16273983.2

Exponentiation

ny
n2 6621063229847056
n3 5.3875535884334E+23
n4 4.3838478293633E+31
n5 3.5671332963207E+39

Nth Root

y√n
2√n 9020.5274790336
3√n 433.33252675721
4√n 94.976457498864
5√n 38.202587009077

Divisors of 81369916

1, 2, 4, 31, 62, 124, 127, 254, 508, 3937, 5167, 7874, 10334, 15748, 20668, 160177, 320354, 640708, 656209, 1312418, 2624836, 20342479, 40684958, 81369916

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 -81369915
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 81369916 can be divided by 24 positive divisors. The sum of these divisors (counting 81369916) is 1, the average is 0.041666666666667.

Base conversion 81369916

Base System Value
2 Binary 100110110011001101100111100
3 Ternary 12200010000112121
4 Quaternary 10312121230330
5 Quinary 131312314131
6 Senary 12024012324
8 Octal 466315474
10 Decimal 81369916
12 Duodecimal 233010a4
16 Hexadecimal 4d99b3c
20 Vigesimal 158b4fg
36 Base36 1cg1fg

Cryptographic Hash Functions

md5 a915a3aefe50ca7d44c775e697b1e86b
sha1 507d2fd5c7c93101153f29c88d94e2b51741fd19
sha256 d5969a47b16924bb4574877353d31a87ebe8005cc88b5fd3e7b0e445abf5eea2
sha512 a4ddb71190a4ccee0652c6d7b6b25008a0d2906e62a1117903f707a6be233d6ca625d823664ae4f46446f22edd7dfb9fad3d61c76ffcdbb79a55da7d19c0ca57
ripemd-160 25e7851221ab1f411fb16ab9f44f351e9d494461

81369916 as geometric shapes

Circle

Radius = n
Diameter 162739832
Circumference 511262260.65764
Area 2.0800683601841E+16

Sphere

Radius = n
Volume 2.2567331698992E+24
Surface area 8.3202734407364E+16
Circumference 511262260.65764

Square

Length = n
Perimeter 325479664
Area 6621063229847056
Diagonal 115074438.77636

Cube

Length = n
Surface area 39726379379082336
Volume 5.3875535884334E+23
Space diagonal 140936828.71961

Equilateral Triangle

Length = n
Perimeter 244109748
Area 2.8670044785553E+15
Altitude 70468414.359806

Triangular Pyramid

Length = n
Surface area 2.8670044785553E+15
Volume 6.3492927939787E+22
Height 38358146.258787