81777978 (number)

81777978 is an even 8-digits composite number following 81777977 and preceding 81777979. In scientific notation, it is written as 8.1777978 × 10^7. The sum of its digits is 54. It has a total of 4 prime factors and 16 positive divisors. There are 27259308 positive integers (up to 81777978) that are relatively prime to 81777978.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1777978 × 10^7
Engineering notation 8.1777978 × 10^6

Prime Factorization of 81777978

Prime Factorization 2 × 3 × 9 × 1514407

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81777978
Product of the distinct prime numbers

The prime factorization of 81777978 is 2 × 3 × 9 × 1514407. Since it has a total of 4 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81777978)

Multiplication

n×y
n×2 163555956
n×3 245333934
n×4 327111912
n×5 408889890

Division

n÷y
n÷2 40888989
n÷3 27259326
n÷3 20444494.5
n÷5 16355595.6

Exponentiation

ny
n2 6687637685768484
n3 5.4690148753875E+23
n4 4.4724497816111E+31
n5 3.657478998467E+39

Nth Root

y√n
2√n 9043.1177145938
3√n 434.0556923441
4√n 95.095308583514
5√n 38.240826809802

Divisors of 81777978

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 -81777977
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 81777978 can be divided by 16 positive divisors. The sum of these divisors (counting 81777978) is 1, the average is 0.0625.

Base conversion 81777978

Base System Value
2 Binary 100110111111101010100111010
3 Ternary 12200212202022000
4 Quaternary 10313331110322
5 Quinary 131413343403
6 Senary 12040441430
8 Octal 467752472
10 Decimal 81777978
12 Duodecimal 23479276
16 Hexadecimal 4dfd53a
20 Vigesimal 15b24ii
36 Base36 1cosai

Cryptographic Hash Functions

md5 a0a3d07b2742b15fe4772b7edf5f61cf
sha1 9dde928cedaa2267a6ae116106e27f66ed2b76cb
sha256 a708bc90374e00c4fc3225fa905f373c09f8ff7003cedb08c97242ff0d0743b0
sha512 01910ed21271dc4c45d34d4a1c5470f6b0c9b7b0f06a76b85f07c23f6785374619a35d4a337c9efe9d552b05ca2c58c72000a0d8593be3ee7d5d58c35a3ce0ec
ripemd-160 8f958415dd1e344e32bdab83b9d0b0aa3f160549

81777978 as geometric shapes

Circle

Radius = n
Diameter 163555956
Circumference 513826189.82046
Area 2.1009833423481E+16

Sphere

Radius = n
Volume 2.2908555939854E+24
Surface area 8.4039333693922E+16
Circumference 513826189.82046

Square

Length = n
Perimeter 327111912
Area 6687637685768484
Diagonal 115651525.59105

Cube

Length = n
Surface area 40125826114610904
Volume 5.4690148753875E+23
Space diagonal 141643612.83625

Equilateral Triangle

Length = n
Perimeter 245333934
Area 2.8958320635908E+15
Altitude 70821806.418125

Triangular Pyramid

Length = n
Surface area 2.8958320635908E+15
Volume 6.4452958413276E+22
Height 38550508.53035