81252018 (number)

81252018 is an even 8-digits composite number following 81252017 and preceding 81252019. In scientific notation, it is written as 8.1252018 × 10^7. The sum of its digits is 27. It has a total of 5 prime factors and 32 positive divisors. There are 25658208 positive integers (up to 81252018) that are relatively prime to 81252018.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred fifty-two thousand eighteen

Notation

Scientific notation 8.1252018 × 10^7
Engineering notation 8.1252018 × 10^6

Prime Factorization of 81252018

Prime Factorization 2 × 3 × 9 × 19 × 79193

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81252018
Product of the distinct prime numbers

The prime factorization of 81252018 is 2 × 3 × 9 × 19 × 79193. Since it has a total of 5 prime factors.

Most popular turbo-numbers

10, 4, 69, 43, 179, 903, 6983, 8787, 39431, 47257, 951738, 788577, 8086044, 3029764, 45594208, 63129070, 658659582, 536527882, 2825063490, 658214486

Basic calculations (n = 81252018)

Multiplication

n×y
n×2 162504036
n×3 243756054
n×4 325008072
n×5 406260090

Division

n÷y
n÷2 40626009
n÷3 27084006
n÷3 20313004.5
n÷5 16250403.6

Exponentiation

ny
n2 6601890429072324
n3 5.3641691997701E+23
n4 4.3584957237477E+31
n5 3.5413657299887E+39

Nth Root

y√n
2√n 9013.9901264645
3√n 433.12313842644
4√n 94.942035613655
5√n 38.191510135794

Divisors of 81252018

1, 2, 3, 6, 9, 18, 19, 27, 38, 54, 57, 114, 171, 342, 513, 1026, 79193, 158386, 237579, 475158, 712737, 1425474, 1504667, 2138211, 3009334, 4276422, 4514001, 9028002, 13542003, 27084006, 40626009, 81252018

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 -81252017
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 81252018 can be divided by 32 positive divisors. The sum of these divisors (counting 81252018) is 1, the average is 0.03125.

Base conversion 81252018

Base System Value
2 Binary 100110101111100111010110010
3 Ternary 12122220000211000
4 Quaternary 10311330322302
5 Quinary 131300031033
6 Senary 12021302430
8 Octal 465747262
10 Decimal 81252018
12 Duodecimal 23264a16
16 Hexadecimal 4d7ceb2
20 Vigesimal 157ga0i
36 Base36 1cdigi

Cryptographic Hash Functions

md5 43592edf07edd615696808d21fbc59c3
sha1 4f4cf54d1f6fcdb920d6419353f0524f5d59806d
sha256 90c43ded0cd1b75194c22b7f9d38d11ec455e028f02f2ab606c63658e540064c
sha512 ef4b165a0e6b08c316247fe5ed816fd942bdf8e919084b8a1c5ec9702f3e895f1f020188f8b5d01cacc0b50a30b8aae2b74634b9c68a75f1151b9375cd6bc525
ripemd-160 b8515f0b9189d5c25d1e817a69e8697311ad4186

81252018 as geometric shapes

Circle

Radius = n
Diameter 162504036
Circumference 510521485.67629
Area 2.0740450471778E+16

Sphere

Radius = n
Volume 2.2469379400814E+24
Surface area 8.2961801887114E+16
Circumference 510521485.67629

Square

Length = n
Perimeter 325008072
Area 6601890429072324
Diagonal 114907705.82578

Cube

Length = n
Surface area 39611342574433944
Volume 5.3641691997701E+23
Space diagonal 140732623.3935

Equilateral Triangle

Length = n
Perimeter 243756054
Area 2.858702412289E+15
Altitude 70366311.69675

Triangular Pyramid

Length = n
Surface area 2.858702412289E+15
Volume 6.3217340276491E+22
Height 38302568.608594