81489420 (number)

81489420 is an even 8-digits composite number following 81489419 and preceding 81489421. In scientific notation, it is written as 8.1489420 × 10^7. The sum of its digits is 36. It has a total of 6 prime factors and 48 positive divisors. There are 20579328 positive integers (up to 81489420) that are relatively prime to 81489420.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred eighty-nine thousand four hundred twenty

Notation

Scientific notation 8.1489420 × 10^7
Engineering notation 8.1489420 × 10^6

Prime Factorization of 81489420

Prime Factorization 2 × 2 × 2097 × 5 × 29 × 67

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 40744710
Product of the distinct prime numbers

The prime factorization of 81489420 is 2 × 2 × 2097 × 5 × 29 × 67. Since it has a total of 6 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81489420)

Multiplication

n×y
n×2 162978840
n×3 244468260
n×4 325957680
n×5 407447100

Division

n÷y
n÷2 40744710
n÷3 27163140
n÷3 20372355
n÷5 16297884

Exponentiation

ny
n2 6640525571936400
n3 5.4113257735227E+23
n4 4.4096579871541E+31
n5 3.5934047177156E+39

Nth Root

y√n
2√n 9027.1490516109
3√n 433.54456105743
4√n 95.011310124695
5√n 38.213801675563

Divisors of 81489420

48 divisors

τ Total Divisors 48
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81489419
Sum of the proper positive divisors of n
A Arithmetic Mean 0.020833333333333
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 48
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81489420 can be divided by 48 positive divisors. The sum of these divisors (counting 81489420) is 1, the average is 0.020833333333333.

Base conversion 81489420

Base System Value
2 Binary 100110110110110111000001100
3 Ternary 12200100002110200
4 Quaternary 10312312320030
5 Quinary 131330130140
6 Senary 12030333500
8 Octal 466667014
10 Decimal 81489420
12 Duodecimal 2335a290
16 Hexadecimal 4db6e0c
20 Vigesimal 15963b0
36 Base36 1ciln0

Cryptographic Hash Functions

md5 10a40803f3df6f03d0844b4a9a433270
sha1 2f6e0f733ddd8eae7fa1d281281ace9d3f1bacbd
sha256 ec6a3d68afc91e437f57d7b153c49c4d422661afeca92f9e72ca687c3f57fa03
sha512 171a6929f03b096ff6f3b2c7bd370caa7469b4b08a2b2fb0d3976d0132d5f5f41ed3418cc3b6f2e8a9e989bc4b189af553ede285a889417d657c91438a8f646b
ripemd-160 bb7460fcd23d0b42f1780acebb7ecabf10e7e67c

81489420 as geometric shapes

Circle

Radius = n
Diameter 162978840
Circumference 512013126.43459
Area 2.0861826352771E+16

Sphere

Radius = n
Volume 2.266690839504E+24
Surface area 8.3447305411082E+16
Circumference 512013126.43459

Square

Length = n
Perimeter 325957680
Area 6640525571936400
Diagonal 115243442.95392

Cube

Length = n
Surface area 39843153431618400
Volume 5.4113257735227E+23
Space diagonal 141143815.71932

Equilateral Triangle

Length = n
Perimeter 244468260
Area 2.8754319198886E+15
Altitude 70571907.85966

Triangular Pyramid

Length = n
Surface area 2.8754319198886E+15
Volume 6.377308582779E+22
Height 38414480.984639