81489723 (number)

81489723 is an odd 8-digits composite number following 81489722 and preceding 81489724. In scientific notation, it is written as 8.1489723 × 10^7. The sum of its digits is 42. It has a total of 4 prime factors and 16 positive divisors. There are 46228896 positive integers (up to 81489723) that are relatively prime to 81489723.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1489723 × 10^7
Engineering notation 8.1489723 × 10^6

Prime Factorization of 81489723

Prime Factorization 3 × 7 × 139 × 27917

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81489723
Product of the distinct prime numbers

The prime factorization of 81489723 is 3 × 7 × 139 × 27917. Since it has a total of 4 prime factors.

Most popular turbo-numbers

8, 7, 43, 33, 329, 257, 535, 1782, 55497, 13852, 397838, 501728, 8730870, 2399465, 49340532, 42304066, 815492172, 169324466, 5860906461, 174168760

Basic calculations (n = 81489723)

Multiplication

n×y
n×2 162979446
n×3 244469169
n×4 325958892
n×5 407448615

Division

n÷y
n÷2 40744861.5
n÷3 27163241
n÷3 20372430.75
n÷5 16297944.6

Exponentiation

ny
n2 6640574954616729
n3 5.4113861361245E+23
n4 4.4097235727883E+31
n5 3.5934715245309E+39

Nth Root

y√n
2√n 9027.1658343026
3√n 433.5450984026
4√n 95.011398444095
5√n 38.213830093399

Divisors of 81489723

1, 3, 7, 21, 139, 417, 973, 2919, 27917, 83751, 195419, 586257, 3880463, 11641389, 27163241, 81489723

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 -81489722
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 81489723 can be divided by 16 positive divisors. The sum of these divisors (counting 81489723) is 1, the average is 0.0625.

Base conversion 81489723

Base System Value
2 Binary 100110110110110111100111011
3 Ternary 12200100002212220
4 Quaternary 10312312330323
5 Quinary 131330132343
6 Senary 12030335123
8 Octal 466667473
10 Decimal 81489723
12 Duodecimal 2335a4a3
16 Hexadecimal 4db6f3b
20 Vigesimal 1596463
36 Base36 1cilvf

Cryptographic Hash Functions

md5 ae7a817b80effd45f79a6e1091f6825f
sha1 1e625723f821f3bdf148118edf130214d95c3431
sha256 c47ab69b0c8441aae98852998e6eecbd766579852447a931465f456b9f5b4f18
sha512 9962deb2fcd73dfeef4347fd31ec0b02c703371831c4703355e4632cc3822518379b1fb443a5fe69e875e9b61bc43c22f633272f4d0aab86e3fd82bdd71c68ae
ripemd-160 ef7c93c1da34a318c47ca1d65bfe5087807aa705

81489723 as geometric shapes

Circle

Radius = n
Diameter 162979446
Circumference 512015030.23973
Area 2.0861981493036E+16

Sphere

Radius = n
Volume 2.2667161241315E+24
Surface area 8.3447925972145E+16
Circumference 512015030.23973

Square

Length = n
Perimeter 325958892
Area 6640574954616729
Diagonal 115243871.46063

Cube

Length = n
Surface area 39843449727700374
Volume 5.4113861361245E+23
Space diagonal 141144340.53071

Equilateral Triangle

Length = n
Perimeter 244469169
Area 2.8754533032164E+15
Altitude 70572170.265357

Triangular Pyramid

Length = n
Surface area 2.8754533032164E+15
Volume 6.3773797207876E+22
Height 38414623.820209