81640488 (number)

81640488 is an even 8-digits composite number following 81640487 and preceding 81640489. In scientific notation, it is written as 8.1640488 × 10^7. The sum of its digits is 39. It has a total of 7 prime factors and 64 positive divisors. There are 26389440 positive integers (up to 81640488) that are relatively prime to 81640488.

Interesting facts

Basic properties

Name

Name eighty-one million six hundred forty thousand four hundred eighty-eight

Notation

Scientific notation 8.1640488 × 10^7
Engineering notation 8.1640488 × 10^6

Prime Factorization of 81640488

Prime Factorization 2 × 2 × 2 × 3 × 43 × 239 × 331

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 20410122
Product of the distinct prime numbers

The prime factorization of 81640488 is 2 × 2 × 2 × 3 × 43 × 239 × 331. Since it has a total of 7 prime factors.

Most popular turbo-numbers

10, 5, 90, 16, 34, 683, 5945, 9040, 7186, 42259, 265984, 927284, 4523489, 2813511, 82010462, 74949143, 587339093, 435485892, 9621332852, 8374566131

Basic calculations (n = 81640488)

Multiplication

n×y
n×2 163280976
n×3 244921464
n×4 326561952
n×5 408202440

Division

n÷y
n÷2 40820244
n÷3 27213496
n÷3 20410122
n÷5 16328097.6

Exponentiation

ny
n2 6665169280878144
n3 5.441476726935E+23
n4 4.4424481542762E+31
n5 3.6268363522981E+39

Nth Root

y√n
2√n 9035.5126030569
3√n 433.81230247808
4√n 95.055313386769
5√n 38.227959603197

Divisors of 81640488

1, 2, 3, 4, 6, 8, 12, 24, 43, 86, 129, 172, 239, 258, 331, 344, 478, 516, 662, 717, 956, 993, 1032, 1324, 1434, 1912, 1986, 2648, 2868, 3972, 5736, 7944, 10277, 14233, 20554, 28466, 30831, 41108, 42699, 56932, 61662, 79109, 82216, 85398, 113864, 123324, 158218, 170796, 237327, 246648, 316436, 341592, 474654, 632872, 949308, 1898616, 3401687, 6803374, 10205061, 13606748, 20410122, 27213496, 40820244, 81640488

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 -81640487
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 81640488 can be divided by 64 positive divisors. The sum of these divisors (counting 81640488) is 1, the average is 0.015625.

Base conversion 81640488

Base System Value
2 Binary 100110111011011110000101000
3 Ternary 12200121202200210
4 Quaternary 10313123300220
5 Quinary 131344443423
6 Senary 12033501120
8 Octal 467336050
10 Decimal 81640488
12 Duodecimal 234117a0
16 Hexadecimal 4ddbc28
20 Vigesimal 15a5148
36 Base36 1clu7c

Cryptographic Hash Functions

md5 c63357e4829c1e64df4b003beac94a9a
sha1 4b4c84472a396925bf7935b1db30dd2e6ca421c6
sha256 937868f1a7a029edb02d51359f01e0111be96676eb0ede4ab79c8dab05db4e42
sha512 f2407aefed343cc08526e3f1c3ca33d2c62fdaff6962728673414d91b3a4e1b2c9fbdf2488c1cd95cec503284309d09f44a2c0dcc811de3d80febd644e22d924
ripemd-160 52d10ef63789b4969098ff20777cc506ea31457f

81640488 as geometric shapes

Circle

Radius = n
Diameter 163280976
Circumference 512962314.67257
Area 2.0939246847739E+16

Sphere

Radius = n
Volume 2.2793204413358E+24
Surface area 8.3756987390957E+16
Circumference 512962314.67257

Square

Length = n
Perimeter 326561952
Area 6665169280878144
Diagonal 115457085.36836

Cube

Length = n
Surface area 39991015685268864
Volume 5.441476726935E+23
Space diagonal 141405473.17072

Equilateral Triangle

Length = n
Perimeter 244921464
Area 2.8861029588821E+15
Altitude 70702736.585359

Triangular Pyramid

Length = n
Surface area 2.8861029588821E+15
Volume 6.4128418221409E+22
Height 38485695.122786