81915300 (number)

81915300 is an even 8-digits composite number following 81915299 and preceding 81915301. In scientific notation, it is written as 8.1915300 × 10^7. The sum of its digits is 27. It has a total of 6 prime factors and 48 positive divisors. There are 21837600 positive integers (up to 81915300) that are relatively prime to 81915300.

Interesting facts

Basic properties

Name

Name eighty-one million nine hundred fifteen thousand three hundred

Notation

Scientific notation 8.1915300 × 10^7
Engineering notation 8.1915300 × 10^6

Prime Factorization of 81915300

Prime Factorization 2 × 2 × 15 × 5 × 81 × 3371

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 40957650
Product of the distinct prime numbers

The prime factorization of 81915300 is 2 × 2 × 15 × 5 × 81 × 3371. Since it has a total of 6 prime factors.

Most popular turbo-numbers

2, 9, 74, 13, 33, 635, 6804, 5041, 53232, 29261, 687371, 29531, 6636201, 237429, 17690133, 93127404, 537225460, 521083495, 2333627112, 257298683

Basic calculations (n = 81915300)

Multiplication

n×y
n×2 163830600
n×3 245745900
n×4 327661200
n×5 409576500

Division

n÷y
n÷2 40957650
n÷3 27305100
n÷3 20478825
n÷5 16383060

Exponentiation

ny
n2 6710116374090000
n3 5.4966119581849E+23
n4 4.5025661753831E+31
n5 3.6882905902636E+39

Nth Root

y√n
2√n 9050.7071546924
3√n 434.29851266118
4√n 95.135204602147
5√n 38.253661030673

Divisors of 81915300

1, 2, 4, 5, 10, 15, 20, 30, 60, 75, 81, 150, 162, 300, 324, 405, 810, 1215, 1620, 2430, 3371, 4860, 6075, 6742, 12150, 13484, 16855, 24300, 33710, 50565, 67420, 101130, 202260, 252825, 273051, 505650, 546102, 1011300, 1092204, 1365255, 2730510, 4095765, 5461020, 8191530, 16383060, 20478825, 40957650, 81915300

48 divisors

τ Total Divisors 48
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81915299
Sum of the proper positive divisors of n
A Arithmetic Mean 0.020833333333333
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 48
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81915300 can be divided by 48 positive divisors. The sum of these divisors (counting 81915300) is 1, the average is 0.020833333333333.

Base conversion 81915300

Base System Value
2 Binary 100111000011110110110100100
3 Ternary 12201010201200000
4 Quaternary 10320132312210
5 Quinary 131432242200
6 Senary 12043421300
8 Octal 470366644
10 Decimal 81915300
12 Duodecimal 23524830
16 Hexadecimal 4e1eda4
20 Vigesimal 15bj850
36 Base36 1crq90

Cryptographic Hash Functions

md5 86e6467329593e0273fc02e6938ce585
sha1 0e217120c8dc1b175b9a7237ecb474975a2fed91
sha256 13c4fb56307d9b83a1f161d6487577da553ca7490b2b9343f6f0f2e71abec535
sha512 e697c5975b73e5f83e5d752c4eec88d81ca874f2f0706ce5fd0570826128f04957503139b3fba5b34fad990fd878c9bb7fdfc6ff61528197008c43a461086153
ripemd-160 716f895df9b46055d83dccccc776158e0a60221e

81915300 as geometric shapes

Circle

Radius = n
Diameter 163830600
Circumference 514689009.39321
Area 2.1080452305574E+16

Sphere

Radius = n
Volume 2.3024154329957E+24
Surface area 8.4321809222295E+16
Circumference 514689009.39321

Square

Length = n
Perimeter 327661200
Area 6710116374090000
Diagonal 115845728.22586

Cube

Length = n
Surface area 40260698244540000
Volume 5.4966119581849E+23
Space diagonal 141881461.51725

Equilateral Triangle

Length = n
Perimeter 245745900
Area 2.9055656211559E+15
Altitude 70940730.758623

Triangular Pyramid

Length = n
Surface area 2.9055656211559E+15
Volume 6.4778193153061E+22
Height 38615242.741954