81121208 (number)

81121208 is an even 8-digits composite number following 81121207 and preceding 81121209. In scientific notation, it is written as 8.1121208 × 10^7. The sum of its digits is 23. It has a total of 5 prime factors and 16 positive divisors. There are 34766208 positive integers (up to 81121208) that are relatively prime to 81121208.

Interesting facts

Basic properties

Name

Name eighty-one million one hundred twenty-one thousand two hundred eight

Notation

Scientific notation 8.1121208 × 10^7
Engineering notation 8.1121208 × 10^6

Prime Factorization of 81121208

Prime Factorization 2 × 2 × 2 × 7 × 1448593

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 20280302
Product of the distinct prime numbers

The prime factorization of 81121208 is 2 × 2 × 2 × 7 × 1448593. Since it has a total of 5 prime factors.

Most popular turbo-numbers

5, 1, 45, 42, 402, 918, 2184, 5730, 88081, 84097, 685989, 686332, 2008831, 9178971, 52787545, 20765115, 474024709, 739634147, 4150921208, 7081447566

Basic calculations (n = 81121208)

Multiplication

n×y
n×2 162242416
n×3 243363624
n×4 324484832
n×5 405606040

Division

n÷y
n÷2 40560604
n÷3 27040402.666667
n÷3 20280302
n÷5 16224241.6

Exponentiation

ny
n2 6580650387379264
n3 5.3383030884987E+23
n4 4.3304959520915E+31
n5 3.5129506287277E+39

Nth Root

y√n
2√n 9006.7312605628
3√n 432.89058104568
4√n 94.903800032258
5√n 38.179205083319

Divisors of 81121208

1, 2, 4, 7, 8, 14, 28, 56, 1448593, 2897186, 5794372, 10140151, 11588744, 20280302, 40560604, 81121208

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81121207
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81121208 can be divided by 16 positive divisors. The sum of these divisors (counting 81121208) is 1, the average is 0.0625.

Base conversion 81121208

Base System Value
2 Binary 100110101011100111110111000
3 Ternary 12122122101101012
4 Quaternary 10311130332320
5 Quinary 131231334313
6 Senary 12014413052
8 Octal 465347670
10 Decimal 81121208
12 Duodecimal 23201188
16 Hexadecimal 4d5cfb8
20 Vigesimal 1570308
36 Base36 1capiw

Cryptographic Hash Functions

md5 a2112b0a0fba3b44fe459f9d6557d3bb
sha1 e216c551cf5a4c756e1128516c1d8df691494f00
sha256 f0b67824426db560c7d9e4c72d41d010bb5273539dd1fe23bfa26e6a9662ad1f
sha512 42d48952a384f17524b552c43c42c09121e0350d6b4021c741d0945bdc3e4bc4d0d3a3814cdbb072eeded6ef0f5a89ba877268513985ddaccc81b2ecbae74282
ripemd-160 989f820b3a23ceb4a0c9de5a23c8a85f8a183ea5

81121208 as geometric shapes

Circle

Radius = n
Diameter 162242416
Circumference 509699582.20626
Area 2.0673722912834E+16

Sphere

Radius = n
Volume 2.2361031687284E+24
Surface area 8.2694891651334E+16
Circumference 509699582.20626

Square

Length = n
Perimeter 324484832
Area 6580650387379264
Diagonal 114722712.54969

Cube

Length = n
Surface area 39483902324275584
Volume 5.3383030884987E+23
Space diagonal 140506053.82736

Equilateral Triangle

Length = n
Perimeter 243363624
Area 2.8495052044472E+15
Altitude 70253026.913681

Triangular Pyramid

Length = n
Surface area 2.8495052044472E+15
Volume 6.2912505231776E+22
Height 38240904.18323