81017872 (number)

81017872 is an even 8-digits composite number following 81017871 and preceding 81017873. In scientific notation, it is written as 8.1017872 × 10^7. The sum of its digits is 34. It has a total of 7 prime factors and 40 positive divisors. There are 37086336 positive integers (up to 81017872) that are relatively prime to 81017872.

Interesting facts

Basic properties

Name

Name eighty-one million seventeen thousand eight hundred seventy-two

Notation

Scientific notation 8.1017872 × 10^7
Engineering notation 8.1017872 × 10^6

Prime Factorization of 81017872

Prime Factorization 2 × 2 × 2 × 2 × 13 × 127 × 3067

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 10127234
Product of the distinct prime numbers

The prime factorization of 81017872 is 2 × 2 × 2 × 2 × 13 × 127 × 3067. Since it has a total of 7 prime factors.

Most popular turbo-numbers

9, 7, 39, 45, 58, 413, 146, 2482, 15451, 14347, 94541, 330711, 3554991, 325930, 88749800, 38192095, 661288574, 8369796, 8181387049, 4306308471

Basic calculations (n = 81017872)

Multiplication

n×y
n×2 162035744
n×3 243053616
n×4 324071488
n×5 405089360

Division

n÷y
n÷2 40508936
n÷3 27005957.333333
n÷3 20254468
n÷5 16203574.4

Exponentiation

ny
n2 6563895583408384
n3 5.3179285219795E+23
n4 4.3084725229888E+31
n5 3.4906327538302E+39

Nth Root

y√n
2√n 9000.9928341267
3√n 432.70669083149
4√n 94.873562356047
5√n 38.169473230828

Divisors of 81017872

1, 2, 4, 8, 13, 16, 26, 52, 104, 127, 208, 254, 508, 1016, 1651, 2032, 3067, 3302, 6134, 6604, 12268, 13208, 24536, 26416, 39871, 49072, 79742, 159484, 318968, 389509, 637936, 779018, 1558036, 3116072, 5063617, 6232144, 10127234, 20254468, 40508936, 81017872

40 divisors

τ Total Divisors 40
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81017871
Sum of the proper positive divisors of n
A Arithmetic Mean 0.025
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 40
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81017872 can be divided by 40 positive divisors. The sum of these divisors (counting 81017872) is 1, the average is 0.025.

Base conversion 81017872

Base System Value
2 Binary 100110101000011110000010000
3 Ternary 12122110010121221
4 Quaternary 10311003300100
5 Quinary 131220032442
6 Senary 12012254424
8 Octal 465036020
10 Decimal 81017872
12 Duodecimal 23171414
16 Hexadecimal 4d43c10
20 Vigesimal 15674dc
36 Base36 1c8hsg

Cryptographic Hash Functions

md5 a7f476ff52972dc82216ded3033a96fc
sha1 8e41622a31483b4378a9bbc1f6148113beab65f7
sha256 b2a4064b8d2a485e461215fb13cf5a86e074e24c55ee6a6a00969c23cf834203
sha512 0a3cfddd2d7d6c78e2a57929852e5434c8ad12441decb491fff1541d7874d5bbe3625a15890016e78d86431e95c68e1e877d6deebac4bfc1ede6c1497794fda0
ripemd-160 58a11e576f3004ab31b1be101923e277b516813c

81017872 as geometric shapes

Circle

Radius = n
Diameter 162035744
Circumference 509050302.96936
Area 2.0621086143766E+16

Sphere

Radius = n
Volume 2.2275686902622E+24
Surface area 8.2484344575065E+16
Circumference 509050302.96936

Square

Length = n
Perimeter 324071488
Area 6563895583408384
Diagonal 114576573.37701

Cube

Length = n
Surface area 39383373500450304
Volume 5.3179285219795E+23
Space diagonal 140327070.62511

Equilateral Triangle

Length = n
Perimeter 243053616
Area 2.8422501615101E+15
Altitude 70163535.312556

Triangular Pyramid

Length = n
Surface area 2.8422501615101E+15
Volume 6.2672388662617E+22
Height 38192191.125669