81444288 (number)

81444288 is an even 8-digits composite number following 81444287 and preceding 81444289. In scientific notation, it is written as 8.1444288 × 10^7. The sum of its digits is 39. It has a total of 9 prime factors and 56 positive divisors. There are 25966336 positive integers (up to 81444288) that are relatively prime to 81444288.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1444288 × 10^7
Engineering notation 8.1444288 × 10^6

Prime Factorization of 81444288

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 3 × 23 × 18443

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 9
Total number of prime factors
rad Radical 2545134
Product of the distinct prime numbers

The prime factorization of 81444288 is 2 × 2 × 2 × 2 × 2 × 2 × 3 × 23 × 18443. Since it has a total of 9 prime factors.

Most popular turbo-numbers

1, 6, 56, 94, 734, 920, 5280, 5802, 22340, 31608, 61890, 324757, 800887, 3375439, 94943547, 42208890, 296273149, 380911259, 494039047, 2458159698

Basic calculations (n = 81444288)

Multiplication

n×y
n×2 162888576
n×3 244332864
n×4 325777152
n×5 407221440

Division

n÷y
n÷2 40722144
n÷3 27148096
n÷3 20361072
n÷5 16288857.6

Exponentiation

ny
n2 6633172047826944
n3 5.4023397461677E+23
n4 4.3998971416073E+31
n5 3.5834648997144E+39

Nth Root

y√n
2√n 9024.6489128387
3√n 433.46450834828
4√n 94.998152154864
5√n 38.209567880553

Divisors of 81444288

1, 2, 3, 4, 6, 8, 12, 16, 23, 24, 32, 46, 48, 64, 69, 92, 96, 138, 184, 192, 276, 368, 552, 736, 1104, 1472, 2208, 4416, 18443, 36886, 55329, 73772, 110658, 147544, 221316, 295088, 424189, 442632, 590176, 848378, 885264, 1180352, 1272567, 1696756, 1770528, 2545134, 3393512, 3541056, 5090268, 6787024, 10180536, 13574048, 20361072, 27148096, 40722144, 81444288

56 divisors

τ Total Divisors 56
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81444287
Sum of the proper positive divisors of n
A Arithmetic Mean 0.017857142857143
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 56
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81444288 can be divided by 56 positive divisors. The sum of these divisors (counting 81444288) is 1, the average is 0.017857142857143.

Base conversion 81444288

Base System Value
2 Binary 100110110101011110111000000
3 Ternary 12200020210120010
4 Quaternary 10312223313000
5 Quinary 131322204123
6 Senary 12025344520
8 Octal 466536700
10 Decimal 81444288
12 Duodecimal 23338140
16 Hexadecimal 4dabdc0
20 Vigesimal 1590ae8
36 Base36 1chmtc

Cryptographic Hash Functions

md5 3fa63ac6f46627280ce9227b12fabe50
sha1 2be71df41f2e3bb3e0cac9eabbbe2dcc14acaf19
sha256 640c72a2435a71e4f590d32682354514f37ec31b95c42c3017935db8b18d0a05
sha512 ed3ce5a77e7dd15f0ffd6c4f0f706320e28257841f25886aea51f7bb420d46b7b5a3a31d446d0e7b0047c8d5468956cacd4003101557767abd8be8583dbb28d0
ripemd-160 6f8680e3d25ef03d4128f1ca223b106a9ac2f9a1

81444288 as geometric shapes

Circle

Radius = n
Diameter 162888576
Circumference 511729553.7153
Area 2.083872457545E+16

Sphere

Radius = n
Volume 2.2629267811675E+24
Surface area 8.3354898301801E+16
Circumference 511729553.7153

Square

Length = n
Perimeter 325777152
Area 6633172047826944
Diagonal 115179616.66742

Cube

Length = n
Surface area 39799032286961664
Volume 5.4023397461677E+23
Space diagonal 141065644.80227

Equilateral Triangle

Length = n
Perimeter 244332864
Area 2.8722477505455E+15
Altitude 70532822.401136

Triangular Pyramid

Length = n
Surface area 2.8722477505455E+15
Volume 6.3667184479813E+22
Height 38393205.555807