81231489 (number)

81231489 is an odd 8-digits composite number following 81231488 and preceding 81231490. In scientific notation, it is written as 8.1231489 × 10^7. The sum of its digits is 36. It has a total of 4 prime factors and 12 positive divisors. There are 53920512 positive integers (up to 81231489) that are relatively prime to 81231489.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred thirty-one thousand four hundred eighty-nine

Notation

Scientific notation 8.1231489 × 10^7
Engineering notation 8.1231489 × 10^6

Prime Factorization of 81231489

Prime Factorization 3 × 3 × 233 × 38737

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 27077163
Product of the distinct prime numbers

The prime factorization of 81231489 is 3 × 3 × 233 × 38737. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 10, 90, 24, 3, 90, 8717, 3, 3604, 6731, 680064, 970760, 7877634, 933891, 28845879, 25459000, 353423813, 948028784, 798915530, 9238975575

Basic calculations (n = 81231489)

Multiplication

n×y
n×2 162462978
n×3 243694467
n×4 324925956
n×5 406157445

Division

n÷y
n÷2 40615744.5
n÷3 27077163
n÷3 20307872.25
n÷5 16246297.8

Exponentiation

ny
n2 6598554805157121
n3 5.3601043207102E+23
n4 4.3540925516662E+31
n5 3.5368942121566E+39

Nth Root

y√n
2√n 9012.8513246364
3√n 433.08665796282
4√n 94.936038071095
5√n 38.189580060013

Divisors of 81231489

1, 3, 9, 233, 699, 2097, 38737, 116211, 348633, 9025721, 27077163, 81231489

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81231488
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81231489 can be divided by 12 positive divisors. The sum of these divisors (counting 81231489) is 1, the average is 0.083333333333333.

Base conversion 81231489

Base System Value
2 Binary 100110101110111111010000001
3 Ternary 12122211222122200
4 Quaternary 10311313322001
5 Quinary 131243401424
6 Senary 12021023413
8 Octal 465677201
10 Decimal 81231489
12 Duodecimal 23254b69
16 Hexadecimal 4d77e81
20 Vigesimal 157die9
36 Base36 1cd2m9

Cryptographic Hash Functions

md5 db731aeb0add2d7f0d34158e98cb1107
sha1 2f3dd70060aab0387a493aba14507ef723647f90
sha256 00ff365bd86ac3afda264504dfa96593daf5229b079e74dc468d3d107a85f0cf
sha512 203516420399bcbee4d92c16e7d9e5c78715738752ec3f106841ed7135b59074050004b1db98549ac3acd5be1859bce6c168b2ef1dc0b04e9797c3642a581f7a
ripemd-160 dca9880c46bb2f0857ec6bff8d583cd2c8d519b1

81231489 as geometric shapes

Circle

Radius = n
Diameter 162462978
Circumference 510392498.16512
Area 2.0729971300191E+16

Sphere

Radius = n
Volume 2.2452352475224E+24
Surface area 8.2919885200765E+16
Circumference 510392498.16512

Square

Length = n
Perimeter 324925956
Area 6598554805157121
Diagonal 114878673.43556

Cube

Length = n
Surface area 39591328830942726
Volume 5.3601043207102E+23
Space diagonal 140697066.12247

Equilateral Triangle

Length = n
Perimeter 243694467
Area 2.857258044765E+15
Altitude 70348533.061236

Triangular Pyramid

Length = n
Surface area 2.857258044765E+15
Volume 6.3169435217358E+22
Height 38292891.145187