81369912 (number)

81369912 is an even 8-digits composite number following 81369911 and preceding 81369913. In scientific notation, it is written as 8.1369912 × 10^7. The sum of its digits is 39. It has a total of 7 prime factors and 64 positive divisors. There are 24422400 positive integers (up to 81369912) that are relatively prime to 81369912.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1369912 × 10^7
Engineering notation 8.1369912 × 10^6

Prime Factorization of 81369912

Prime Factorization 2 × 2 × 2 × 3 × 13 × 41 × 6361

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 20342478
Product of the distinct prime numbers

The prime factorization of 81369912 is 2 × 2 × 2 × 3 × 13 × 41 × 6361. Since it has a total of 7 prime factors.

Most popular turbo-numbers

5, 8, 50, 40, 632, 704, 5396, 2370, 99459, 82612, 692487, 978261, 5419965, 59106, 92348836, 90051677, 341017796, 471127549, 1829470833, 4760946672

Basic calculations (n = 81369912)

Multiplication

n×y
n×2 162739824
n×3 244109736
n×4 325479648
n×5 406849560

Division

n÷y
n÷2 40684956
n÷3 27123304
n÷3 20342478
n÷5 16273982.4

Exponentiation

ny
n2 6621062578887744
n3 5.3875527939059E+23
n4 4.3838469673548E+31
n5 3.5671324195512E+39

Nth Root

y√n
2√n 9020.5272573171
3√n 433.33251965659
4√n 94.976456331646
5√n 38.202586633483

Divisors of 81369912

1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 41, 52, 78, 82, 104, 123, 156, 164, 246, 312, 328, 492, 533, 984, 1066, 1599, 2132, 3198, 4264, 6361, 6396, 12722, 12792, 19083, 25444, 38166, 50888, 76332, 82693, 152664, 165386, 248079, 260801, 330772, 496158, 521602, 661544, 782403, 992316, 1043204, 1564806, 1984632, 2086408, 3129612, 3390413, 6259224, 6780826, 10171239, 13561652, 20342478, 27123304, 40684956, 81369912

64 divisors

τ Total Divisors 64
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81369911
Sum of the proper positive divisors of n
A Arithmetic Mean 0.015625
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 64
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81369912 can be divided by 64 positive divisors. The sum of these divisors (counting 81369912) is 1, the average is 0.015625.

Base conversion 81369912

Base System Value
2 Binary 100110110011001101100111000
3 Ternary 12200010000112110
4 Quaternary 10312121230320
5 Quinary 131312314122
6 Senary 12024012320
8 Octal 466315470
10 Decimal 81369912
12 Duodecimal 233010a0
16 Hexadecimal 4d99b38
20 Vigesimal 158b4fc
36 Base36 1cg1fc

Cryptographic Hash Functions

md5 14d143cd50666d813061055934cde082
sha1 67991abf2172026655a1bf57bdaa661e0a532878
sha256 287f348a839e3e23afee20c36e96303415d57e3e8a44283da78a7043b7d9071d
sha512 49522cae7fec9ea3f85e99a0b91ad81b43e798bb9884f4132fdee12763ac001272fc5de4a2ca98a81a9b2749c772b6086edad7c0e2d988e0119b33f5dec6dd1d
ripemd-160 97178b14288d4603165b573cfe7a45661a3c0ae5

81369912 as geometric shapes

Circle

Radius = n
Diameter 162739824
Circumference 511262235.5249
Area 2.0800681556792E+16

Sphere

Radius = n
Volume 2.2567328370883E+24
Surface area 8.3202726227168E+16
Circumference 511262235.5249

Square

Length = n
Perimeter 325479648
Area 6621062578887744
Diagonal 115074433.11951

Cube

Length = n
Surface area 39726375473326464
Volume 5.3875527939059E+23
Space diagonal 140936821.79141

Equilateral Triangle

Length = n
Perimeter 244109736
Area 2.8670041966816E+15
Altitude 70468410.895704

Triangular Pyramid

Length = n
Surface area 2.8670041966816E+15
Volume 6.349291857619E+22
Height 38358144.373168