81444280 (number)

81444280 is an even 8-digits composite number following 81444279 and preceding 81444281. In scientific notation, it is written as 8.1444280 × 10^7. The sum of its digits is 31. It has a total of 6 prime factors and 32 positive divisors. There are 30661120 positive integers (up to 81444280) that are relatively prime to 81444280.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred forty-four thousand two hundred eighty

Notation

Scientific notation 8.1444280 × 10^7
Engineering notation 8.1444280 × 10^6

Prime Factorization of 81444280

Prime Factorization 2 × 2 × 2 × 5 × 17 × 119771

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 20361070
Product of the distinct prime numbers

The prime factorization of 81444280 is 2 × 2 × 2 × 5 × 17 × 119771. Since it has a total of 6 prime factors.

Most popular turbo-numbers

5, 8, 64, 70, 807, 746, 1943, 9476, 98411, 24161, 764781, 432221, 2835928, 7684310, 88044381, 12621091, 767122352, 511887397, 4729595453, 1826241451

Basic calculations (n = 81444280)

Multiplication

n×y
n×2 162888560
n×3 244332840
n×4 325777120
n×5 407221400

Division

n÷y
n÷2 40722140
n÷3 27148093.333333
n÷3 20361070
n÷5 16288856

Exponentiation

ny
n2 6633170744718400
n3 5.4023381542065E+23
n4 4.3998954128588E+31
n5 3.5834631397559E+39

Nth Root

y√n
2√n 9024.6484696081
3√n 433.46449415569
4√n 94.998149822026
5√n 38.209567129914

Divisors of 81444280

1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 119771, 239542, 479084, 598855, 958168, 1197710, 2036107, 2395420, 4072214, 4790840, 8144428, 10180535, 16288856, 20361070, 40722140, 81444280

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81444279
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81444280 can be divided by 32 positive divisors. The sum of these divisors (counting 81444280) is 1, the average is 0.03125.

Base conversion 81444280

Base System Value
2 Binary 100110110101011110110111000
3 Ternary 12200020210112211
4 Quaternary 10312223312320
5 Quinary 131322204110
6 Senary 12025344504
8 Octal 466536670
10 Decimal 81444280
12 Duodecimal 23338134
16 Hexadecimal 4dabdb8
20 Vigesimal 1590ae0
36 Base36 1chmt4

Cryptographic Hash Functions

md5 ab18c3fbd6d35a8a62b8356c2429ea87
sha1 b559e5144cb0b3021a02162e81890e4c43ee5013
sha256 b64b44a1047cc3492e2c1ccac510731c26216b007e0dcb60ab96c85a4257e6bc
sha512 58852b93cddda9a9536126e31f4e0458824471a1c2985f111344aaa11eaa37b7e023e618e54f344e192a85d83cf7479d93a981b1409082f47031c51dcfea15e9
ripemd-160 854cbb45a9593bc2c4830214fb5745b69bc8226a

81444280 as geometric shapes

Circle

Radius = n
Diameter 162888560
Circumference 511729503.44982
Area 2.0838720481614E+16

Sphere

Radius = n
Volume 2.2629261143284E+24
Surface area 8.3354881926456E+16
Circumference 511729503.44982

Square

Length = n
Perimeter 325777120
Area 6633170744718400
Diagonal 115179605.35371

Cube

Length = n
Surface area 39799024468310400
Volume 5.4023381542065E+23
Space diagonal 141065630.94587

Equilateral Triangle

Length = n
Perimeter 244332840
Area 2.8722471862829E+15
Altitude 70532815.472933

Triangular Pyramid

Length = n
Surface area 2.8722471862829E+15
Volume 6.3667165718371E+22
Height 38393201.784571