81249984 (number)

81249984 is an even 8-digits composite number following 81249983 and preceding 81249985. In scientific notation, it is written as 8.1249984 × 10^7. The sum of its digits is 45. It has a total of 10 prime factors and 84 positive divisors. There are 25901568 positive integers (up to 81249984) that are relatively prime to 81249984.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1249984 × 10^7
Engineering notation 8.1249984 × 10^6

Prime Factorization of 81249984

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 23 × 6133

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 10
Total number of prime factors
rad Radical 846354
Product of the distinct prime numbers

The prime factorization of 81249984 is 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 23 × 6133. Since it has a total of 10 prime factors.

Most popular turbo-numbers

9, 10, 68, 81, 100, 617, 1170, 6217, 66028, 99700, 249785, 156489, 218247, 6496868, 89758488, 47629908, 405259317, 296082313, 7791865098, 272070658

Basic calculations (n = 81249984)

Multiplication

n×y
n×2 162499968
n×3 243749952
n×4 324999936
n×5 406249920

Division

n÷y
n÷2 40624992
n÷3 27083328
n÷3 20312496
n÷5 16249996.8

Exponentiation

ny
n2 6601559900000256
n3 5.3637663625006E+23
n4 4.3580593113291E+31
n5 3.5409224931654E+39

Nth Root

y√n
2√n 9013.8773011396
3√n 433.11952424004
4√n 94.941441431756
5√n 38.191318922551

Divisors of 81249984

1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 23, 24, 32, 36, 46, 48, 64, 69, 72, 92, 96, 138, 144, 184, 192, 207, 276, 288, 368, 414, 552, 576, 736, 828, 1104, 1472, 1656, 2208, 3312, 4416, 6133, 6624, 12266, 13248, 18399, 24532, 36798, 49064, 55197, 73596, 98128, 110394, 141059, 147192, 196256, 220788, 282118, 294384, 392512, 423177, 441576, 564236, 588768, 846354, 883152, 1128472, 1177536, 1269531, 1692708, 1766304, 2256944, 2539062, 3385416, 3532608, 4513888, 5078124, 6770832, 9027776, 10156248, 13541664, 20312496, 27083328, 40624992, 81249984

84 divisors

τ Total Divisors 84
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81249983
Sum of the proper positive divisors of n
A Arithmetic Mean 0.011904761904762
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 84
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81249984 can be divided by 84 positive divisors. The sum of these divisors (counting 81249984) is 1, the average is 0.011904761904762.

Base conversion 81249984

Base System Value
2 Binary 100110101111100011011000000
3 Ternary 12122212221000200
4 Quaternary 10311330123000
5 Quinary 131244444414
6 Senary 12021245200
8 Octal 465743300
10 Decimal 81249984
12 Duodecimal 23263800
16 Hexadecimal 4d7c6c0
20 Vigesimal 157g4j4
36 Base36 1cdgw0

Cryptographic Hash Functions

md5 5c8ee7c044f1a08243f9c066929693b5
sha1 93cb8d02e43b3d157a04eb2dd7201b99aa81804b
sha256 39b5795e3e371680c3d685fbbc876bcd40831c3735bc46625828aba4a6dc3672
sha512 6eb2ee84f69b20bba9d1f7d3e04b3e0edb3d6c789587239e905c69befde5cf7768273a6ac577bcdbc6292058ae9445083caeb7de9cbea23a0d00aee6715a8b9a
ripemd-160 16f58665c71c2c74f5eeebaec1d944a0bcd6dc29

81249984 as geometric shapes

Circle

Radius = n
Diameter 162499968
Circumference 510508705.67738
Area 2.0739412084074E+16

Sphere

Radius = n
Volume 2.2467692000005E+24
Surface area 8.2957648336295E+16
Circumference 510508705.67738

Square

Length = n
Perimeter 324999936
Area 6601559900000256
Diagonal 114904829.3154

Cube

Length = n
Surface area 39609359400001536
Volume 5.3637663625006E+23
Space diagonal 140729100.40216

Equilateral Triangle

Length = n
Perimeter 243749952
Area 2.8585592890024E+15
Altitude 70364550.201079

Triangular Pyramid

Length = n
Surface area 2.8585592890024E+15
Volume 6.3212592793742E+22
Height 38301609.771799