81489072 (number)

81489072 is an even 8-digits composite number following 81489071 and preceding 81489073. In scientific notation, it is written as 8.1489072 × 10^7. The sum of its digits is 39. It has a total of 7 prime factors and 40 positive divisors. There are 22477056 positive integers (up to 81489072) that are relatively prime to 81489072.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1489072 × 10^7
Engineering notation 8.1489072 × 10^6

Prime Factorization of 81489072

Prime Factorization 2 × 2 × 2 × 2 × 21 × 29 × 8363

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 10186134
Product of the distinct prime numbers

The prime factorization of 81489072 is 2 × 2 × 2 × 2 × 21 × 29 × 8363. Since it has a total of 7 prime factors.

Most popular turbo-numbers

7, 4, 22, 93, 569, 247, 1031, 6056, 58938, 55557, 150963, 46784, 6798933, 6575631, 50526718, 68379803, 759910158, 530033208, 8758907958, 1573573418

Basic calculations (n = 81489072)

Multiplication

n×y
n×2 162978144
n×3 244467216
n×4 325956288
n×5 407445360

Division

n÷y
n÷2 40744536
n÷3 27163024
n÷3 20372268
n÷5 16297814.4

Exponentiation

ny
n2 6640468855421184
n3 5.4112564467317E+23
n4 4.4095826619819E+31
n5 3.5933279903219E+39

Nth Root

y√n
2√n 9027.1297764018
3√n 433.54394390688
4√n 95.011208688248
5√n 38.213769037153

Divisors of 81489072

1, 2, 4, 8, 16, 21, 29, 42, 58, 84, 116, 168, 232, 336, 464, 609, 1218, 2436, 4872, 8363, 9744, 16726, 33452, 66904, 133808, 175623, 242527, 351246, 485054, 702492, 970108, 1404984, 1940216, 2809968, 3880432, 5093067, 10186134, 20372268, 40744536, 81489072

40 divisors

τ Total Divisors 40
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81489071
Sum of the proper positive divisors of n
A Arithmetic Mean 0.025
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 40
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81489072 can be divided by 40 positive divisors. The sum of these divisors (counting 81489072) is 1, the average is 0.025.

Base conversion 81489072

Base System Value
2 Binary 100110110110110110010110000
3 Ternary 12200100001222210
4 Quaternary 10312312302300
5 Quinary 131330122242
6 Senary 12030332120
8 Octal 466666260
10 Decimal 81489072
12 Duodecimal 2335a040
16 Hexadecimal 4db6cb0
20 Vigesimal 15962dc
36 Base36 1cildc

Cryptographic Hash Functions

md5 616d7199b7ab7a92765ef3572bf70828
sha1 75500eb97f03166a5c43be5307af287ce86a0324
sha256 c7e1132f1ad50b4467158d628d1257d9e15521a0599de2915ebd622c6b0cc071
sha512 b90765f9e8133d5996a86d7c4a9f9c97cfd5b2bd76afbf87238479a1738f74131999e2cf716e139924aa0fb10d4365aabd256ceac6c88702ec1ae54d857a6336
ripemd-160 e0f9359bb8bde7a9bb82e1a25a1050b0d8a9c4d6

81489072 as geometric shapes

Circle

Radius = n
Diameter 162978144
Circumference 512010939.8861
Area 2.0861648172583E+16

Sphere

Radius = n
Volume 2.2666617999657E+24
Surface area 8.3446592690332E+16
Circumference 512010939.8861

Square

Length = n
Perimeter 325956288
Area 6640468855421184
Diagonal 115242950.8076

Cube

Length = n
Surface area 39842813132527104
Volume 5.4112564467317E+23
Space diagonal 141143212.96564

Equilateral Triangle

Length = n
Perimeter 244467216
Area 2.8754073609171E+15
Altitude 70571606.482819

Triangular Pyramid

Length = n
Surface area 2.8754073609171E+15
Volume 6.3772268803724E+22
Height 38414316.935866