81778081 (number)

81778081 is an odd 8-digits composite number following 81778080 and preceding 81778082. In scientific notation, it is written as 8.1778081 × 10^7. The sum of its digits is 40. It has a total of 4 prime factors and 16 positive divisors. There are 63060480 positive integers (up to 81778081) that are relatively prime to 81778081.

Interesting facts

Basic properties

Name

Name eighty-one million seven hundred seventy-eight thousand eighty-one

Notation

Scientific notation 8.1778081 × 10^7
Engineering notation 8.1778081 × 10^6

Prime Factorization of 81778081

Prime Factorization 7 × 11 × 97 × 10949

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81778081
Product of the distinct prime numbers

The prime factorization of 81778081 is 7 × 11 × 97 × 10949. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 5, 5, 84, 673, 596, 4373, 8580, 21436, 22954, 87673, 51179, 7260873, 6536534, 75092691, 89946678, 341120398, 511616244, 8402747950, 3765663895

Basic calculations (n = 81778081)

Multiplication

n×y
n×2 163556162
n×3 245334243
n×4 327112324
n×5 408890405

Division

n÷y
n÷2 40889040.5
n÷3 27259360.333333
n÷3 20444520.25
n÷5 16355616.2

Exponentiation

ny
n2 6687654532042561
n3 5.4690355402139E+23
n4 4.4724723139949E+31
n5 3.6575020316414E+39

Nth Root

y√n
2√n 9043.1234095306
3√n 434.0558745762
4√n 95.09533852682
5√n 38.240836442721

Divisors of 81778081

1, 7, 11, 77, 97, 679, 1067, 7469, 10949, 76643, 120439, 843073, 1062053, 7434371, 11682583, 81778081

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81778080
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81778081 can be divided by 16 positive divisors. The sum of these divisors (counting 81778081) is 1, the average is 0.0625.

Base conversion 81778081

Base System Value
2 Binary 100110111111101010110100001
3 Ternary 12200212202102211
4 Quaternary 10313331112201
5 Quinary 131413344311
6 Senary 12040442121
8 Octal 467752641
10 Decimal 81778081
12 Duodecimal 23479341
16 Hexadecimal 4dfd5a1
20 Vigesimal 15b2541
36 Base36 1cosdd

Cryptographic Hash Functions

md5 9baf1d41b6e1a8f4657551747249d442
sha1 c967044a17ee7d23ac2790207d923973606096db
sha256 8787795fe8508a9e78fdf9751e7e87102399cda4636e647991da7604a4886ddd
sha512 dfa86c4a66876168c7e1af131b10d68575cbb438ad67e6e058032fa420e36c7ead29520dd408642643cf40ab63f4c0ad3e68d65ffd1399c60f3da50fcc233700
ripemd-160 73a9abbaf990c1c64917efa80567d4757e48ea23

81778081 as geometric shapes

Circle

Radius = n
Diameter 163556162
Circumference 513826836.98854
Area 2.1009886347611E+16

Sphere

Radius = n
Volume 2.2908642500477E+24
Surface area 8.4039545390446E+16
Circumference 513826836.98854

Square

Length = n
Perimeter 327112324
Area 6687654532042561
Diagonal 115651671.25505

Cube

Length = n
Surface area 40125927192255366
Volume 5.4690355402139E+23
Space diagonal 141643791.23748

Equilateral Triangle

Length = n
Perimeter 245334243
Area 2.8958393582415E+15
Altitude 70821895.618742

Triangular Pyramid

Length = n
Surface area 2.8958393582415E+15
Volume 6.4453201950592E+22
Height 38550557.085015