81489213 (number)

81489213 is an odd 8-digits composite number following 81489212 and preceding 81489214. In scientific notation, it is written as 8.1489213 × 10^7. The sum of its digits is 36. It has a total of 4 prime factors and 16 positive divisors. There are 49828608 positive integers (up to 81489213) that are relatively prime to 81489213.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1489213 × 10^7
Engineering notation 8.1489213 × 10^6

Prime Factorization of 81489213

Prime Factorization 13 × 27 × 179 × 1297

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81489213
Product of the distinct prime numbers

The prime factorization of 81489213 is 13 × 27 × 179 × 1297. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 8, 6, 54, 22, 868, 1074, 7919, 64990, 31846, 66135, 355340, 9158102, 6128054, 33305928, 21663784, 852613785, 26819942, 6075249886, 8164474753

Basic calculations (n = 81489213)

Multiplication

n×y
n×2 162978426
n×3 244467639
n×4 325956852
n×5 407446065

Division

n÷y
n÷2 40744606.5
n÷3 27163071
n÷3 20372303.25
n÷5 16297842.6

Exponentiation

ny
n2 6640491835359369
n3 5.4112845359636E+23
n4 4.4096131815474E+31
n5 3.5933590779873E+39

Nth Root

y√n
2√n 9027.1375861898
3√n 433.54419395947
4√n 95.011249787537
5√n 38.21378226135

Divisors of 81489213

1, 13, 27, 179, 351, 1297, 2327, 4833, 16861, 35019, 62829, 232163, 455247, 3018119, 6268401, 81489213

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 -81489212
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 81489213 can be divided by 16 positive divisors. The sum of these divisors (counting 81489213) is 1, the average is 0.0625.

Base conversion 81489213

Base System Value
2 Binary 100110110110110110100111101
3 Ternary 12200100002012000
4 Quaternary 10312312310331
5 Quinary 131330123323
6 Senary 12030332513
8 Octal 466666475
10 Decimal 81489213
12 Duodecimal 2335a139
16 Hexadecimal 4db6d3d
20 Vigesimal 159630d
36 Base36 1cilh9

Cryptographic Hash Functions

md5 c42c77d38b84f92315f69a816ddf915d
sha1 c2a5027bb1da49a2fa73138a6ce4c39dc9a3c816
sha256 88ad387fff72621b9bcb76175bc4f67152ebde9fb1441f6bc591b0c27f5e15ae
sha512 7d2d41f1ec39042637b042a1287a033375bca28ee1e5d834dbec3cb07a85042a69cde13ea35a979e165b9b1380d0c98e6670c9fe2c274cd3b7280f3906f70ee7
ripemd-160 6beef8e62c5b6f2e91745fe89bb3b4fdccacca6a

81489213 as geometric shapes

Circle

Radius = n
Diameter 162978426
Circumference 512011825.81523
Area 2.0861720366188E+16

Sphere

Radius = n
Volume 2.2666735659556E+24
Surface area 8.3446881464752E+16
Circumference 512011825.81523

Square

Length = n
Perimeter 325956852
Area 6640491835359369
Diagonal 115243150.21171

Cube

Length = n
Surface area 39842951012156214
Volume 5.4112845359636E+23
Space diagonal 141143457.1848

Equilateral Triangle

Length = n
Perimeter 244467639
Area 2.8754173115222E+15
Altitude 70571728.592401

Triangular Pyramid

Length = n
Surface area 2.8754173115222E+15
Volume 6.3772599838496E+22
Height 38414383.403903