81556688 (number)

81556688 is an even 8-digits composite number following 81556687 and preceding 81556689. In scientific notation, it is written as 8.1556688 × 10^7. The sum of its digits is 47. It has a total of 6 prime factors and 20 positive divisors. There are 40169184 positive integers (up to 81556688) that are relatively prime to 81556688.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred fifty-six thousand six hundred eighty-eight

Notation

Scientific notation 8.1556688 × 10^7
Engineering notation 8.1556688 × 10^6

Prime Factorization of 81556688

Prime Factorization 2 × 2 × 2 × 2 × 67 × 76079

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 10194586
Product of the distinct prime numbers

The prime factorization of 81556688 is 2 × 2 × 2 × 2 × 67 × 76079. Since it has a total of 6 prime factors.

Most popular turbo-numbers

5, 9, 35, 85, 407, 772, 7894, 9363, 66012, 14633, 621309, 204987, 4273172, 5489758, 36879009, 31604723, 35372943, 596651791, 3033726003, 7567793922

Basic calculations (n = 81556688)

Multiplication

n×y
n×2 163113376
n×3 244670064
n×4 326226752
n×5 407783440

Division

n÷y
n÷2 40778344
n÷3 27185562.666667
n÷3 20389172
n÷5 16311337.6

Exponentiation

ny
n2 6651493357529344
n3 5.4247376849409E+23
n4 4.4242363885257E+31
n5 3.6082606677724E+39

Nth Root

y√n
2√n 9030.8741548092
3√n 433.66382257024
4√n 95.030911575177
5√n 38.220108549878

Divisors of 81556688

1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 76079, 152158, 304316, 608632, 1217264, 5097293, 10194586, 20389172, 40778344, 81556688

20 divisors

τ Total Divisors 20
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81556687
Sum of the proper positive divisors of n
A Arithmetic Mean 0.05
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 20
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81556688 can be divided by 20 positive divisors. The sum of these divisors (counting 81556688) is 1, the average is 0.05.

Base conversion 81556688

Base System Value
2 Binary 100110111000111010011010000
3 Ternary 12200110111202002
4 Quaternary 10313013103100
5 Quinary 131334303223
6 Senary 12032013132
8 Octal 467072320
10 Decimal 81556688
12 Duodecimal 233911a8
16 Hexadecimal 4dc74d0
20 Vigesimal 159ebe8
36 Base36 1ck1jk

Cryptographic Hash Functions

md5 93c68fb0f762334187d7dae4ab2f6e47
sha1 01128f8f94397a156a9d804b6cdebb22c3458a9d
sha256 c4a90c51e626115b2bc111fd6613b64430289cb340adfdb7b28ace4d22495fd3
sha512 73b31c2c7bc75beb1fb55aa35f5484344f6b1b5bb765208d94a863cc7c721817ea614a5db128ca52ade44049a7536171d5ca4d1186423b482a265f9725e0f25a
ripemd-160 7d4fbfb8d231b829ec460515236bd6dd87048c51

81556688 as geometric shapes

Circle

Radius = n
Diameter 163113376
Circumference 512435783.74383
Area 2.0896282667415E+16

Sphere

Radius = n
Volume 2.2723088078216E+24
Surface area 8.3585130669662E+16
Circumference 512435783.74383

Square

Length = n
Perimeter 326226752
Area 6651493357529344
Diagonal 115338574.27183

Cube

Length = n
Surface area 39908960145176064
Volume 5.4247376849409E+23
Space diagonal 141260327.31304

Equilateral Triangle

Length = n
Perimeter 244670064
Area 2.8801811103619E+15
Altitude 70630163.656521

Triangular Pyramid

Length = n
Surface area 2.8801811103619E+15
Volume 6.3931146719666E+22
Height 38446191.423944