81508764 (number)

81508764 is an even 8-digits composite number following 81508763 and preceding 81508765. In scientific notation, it is written as 8.1508764 × 10^7. The sum of its digits is 39. It has a total of 4 prime factors and 12 positive divisors. There are 27169584 positive integers (up to 81508764) that are relatively prime to 81508764.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred eight thousand seven hundred sixty-four

Notation

Scientific notation 8.1508764 × 10^7
Engineering notation 8.1508764 × 10^6

Prime Factorization of 81508764

Prime Factorization 2 × 2 × 3 × 6792397

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 40754382
Product of the distinct prime numbers

The prime factorization of 81508764 is 2 × 2 × 3 × 6792397. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 10, 3, 86, 115, 28, 1692, 6825, 38546, 2801, 122204, 129089, 9786430, 1374033, 90249571, 91082102, 150267438, 478870398, 9937223645, 9649923421

Basic calculations (n = 81508764)

Multiplication

n×y
n×2 163017528
n×3 244526292
n×4 326035056
n×5 407543820

Division

n÷y
n÷2 40754382
n÷3 27169588
n÷3 20377191
n÷5 16301752.8

Exponentiation

ny
n2 6643678608807696
n3 5.4151803181715E+23
n4 4.4138465457129E+31
n5 3.5976717642673E+39

Nth Root

y√n
2√n 9028.2204226525
3√n 433.57886335287
4√n 95.016948081132
5√n 38.21561574566

Divisors of 81508764

1, 2, 3, 4, 6, 12, 6792397, 13584794, 20377191, 27169588, 40754382, 81508764

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81508763
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81508764 can be divided by 12 positive divisors. The sum of these divisors (counting 81508764) is 1, the average is 0.083333333333333.

Base conversion 81508764

Base System Value
2 Binary 100110110111011100110011100
3 Ternary 12200101002000010
4 Quaternary 10312323212130
5 Quinary 131331240024
6 Senary 12031003220
8 Octal 466734634
10 Decimal 81508764
12 Duodecimal 23369510
16 Hexadecimal 4dbb99c
20 Vigesimal 1598bi4
36 Base36 1cj0kc

Cryptographic Hash Functions

md5 2fe3a9ab00138bc29a75a357afc0db5c
sha1 32383d8bec19518ca399d5cd695ee4a984d9bc2c
sha256 6ee794831c67b021f4aa8f5f74c8865987943d21db87ff0ba86156498d1ebd1c
sha512 71929179ffeb2ee4cf172269f697cb5cd5faf4b44ee6b59f793c64090d8629bcca8bf4c2920a64383255b0b07215cc2e1c4706cb6e7b4b62d9b62abf904644f4
ripemd-160 722bd4d542eeaaad357b5680b8f4a54e74304837

81508764 as geometric shapes

Circle

Radius = n
Diameter 163017528
Circumference 512134668.37117
Area 2.0871731910242E+16

Sphere

Radius = n
Volume 2.2683054273909E+24
Surface area 8.3486927640968E+16
Circumference 512134668.37117

Square

Length = n
Perimeter 326035056
Area 6643678608807696
Diagonal 115270799.50107

Cube

Length = n
Surface area 39862071652846176
Volume 5.4151803181715E+23
Space diagonal 141177320.51014

Equilateral Triangle

Length = n
Perimeter 244526292
Area 2.8767972249034E+15
Altitude 70588660.255071

Triangular Pyramid

Length = n
Surface area 2.8767972249034E+15
Volume 6.3818512072117E+22
Height 38423599.833689