81444984 (number)

81444984 is an even 8-digits composite number following 81444983 and preceding 81444985. In scientific notation, it is written as 8.1444984 × 10^7. The sum of its digits is 42. It has a total of 7 prime factors and 64 positive divisors. There are 26275200 positive integers (up to 81444984) that are relatively prime to 81444984.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1444984 × 10^7
Engineering notation 8.1444984 × 10^6

Prime Factorization of 81444984

Prime Factorization 2 × 2 × 2 × 3 × 103 × 47 × 701

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 20361246
Product of the distinct prime numbers

The prime factorization of 81444984 is 2 × 2 × 2 × 3 × 103 × 47 × 701. Since it has a total of 7 prime factors.

Most popular turbo-numbers

1, 8, 85, 74, 195, 53, 8983, 5441, 32931, 34241, 130341, 813323, 4824607, 5979091, 42878541, 48165398, 765775578, 936216139, 3694606366, 5203591631

Basic calculations (n = 81444984)

Multiplication

n×y
n×2 162889968
n×3 244334952
n×4 325779936
n×5 407224920

Division

n÷y
n÷2 40722492
n÷3 27148328
n÷3 20361246
n÷5 16288996.8

Exponentiation

ny
n2 6633285418760256
n3 5.4024782479836E+23
n4 4.4000475446737E+31
n5 3.5836180187519E+39

Nth Root

y√n
2√n 9024.6874738132
3√n 433.46574310006
4√n 94.998355111092
5√n 38.209633185976

Divisors of 81444984

1, 2, 3, 4, 6, 8, 12, 24, 47, 94, 103, 141, 188, 206, 282, 309, 376, 412, 564, 618, 701, 824, 1128, 1236, 1402, 2103, 2472, 2804, 4206, 4841, 5608, 8412, 9682, 14523, 16824, 19364, 29046, 32947, 38728, 58092, 65894, 72203, 98841, 116184, 131788, 144406, 197682, 216609, 263576, 288812, 395364, 433218, 577624, 790728, 866436, 1732872, 3393541, 6787082, 10180623, 13574164, 20361246, 27148328, 40722492, 81444984

64 divisors

τ Total Divisors 64
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81444983
Sum of the proper positive divisors of n
A Arithmetic Mean 0.015625
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 64
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81444984 can be divided by 64 positive divisors. The sum of these divisors (counting 81444984) is 1, the average is 0.015625.

Base conversion 81444984

Base System Value
2 Binary 100110110101100000001111000
3 Ternary 12200020211111220
4 Quaternary 10312230001320
5 Quinary 131322214414
6 Senary 12025352040
8 Octal 466540170
10 Decimal 81444984
12 Duodecimal 23338620
16 Hexadecimal 4dac078
20 Vigesimal 1590c94
36 Base36 1chnco

Cryptographic Hash Functions

md5 66744d81e52dd2bd355d8543863d59a7
sha1 90b169059dd56ff2f177263251722ee94614a204
sha256 daaa5904c213f3f7e0cbac65a5c89a7f4b19ff58db3a03af48f33134cccdf293
sha512 375a7d578e703b01174b98d32d632463a7da5f37e7346ea7b2f1823fc945f5d7442a911a36afb802afaf5751d6e3cb21bc3a8a58a1b21f99158b67fe0ec86927
ripemd-160 c3e48486af740911855c3b95c535b7cabe6b79f5

81444984 as geometric shapes

Circle

Radius = n
Diameter 162889968
Circumference 511733926.81228
Area 2.0839080740742E+16

Sphere

Radius = n
Volume 2.2629847966725E+24
Surface area 8.3356322962966E+16
Circumference 511733926.81228

Square

Length = n
Perimeter 325779936
Area 6633285418760256
Diagonal 115180600.96006

Cube

Length = n
Surface area 39799712512561536
Volume 5.4024782479836E+23
Space diagonal 141066850.30963

Equilateral Triangle

Length = n
Perimeter 244334952
Area 2.8722968415996E+15
Altitude 70533425.154817

Triangular Pyramid

Length = n
Surface area 2.8722968415996E+15
Volume 6.3668816739367E+22
Height 38393533.653353