81618900 (number)

81618900 is an even 8-digits composite number following 81618899 and preceding 81618901. In scientific notation, it is written as 8.1618900 × 10^7. The sum of its digits is 33. It has a total of 6 prime factors and 48 positive divisors. There are 19785600 positive integers (up to 81618900) that are relatively prime to 81618900.

Interesting facts

Basic properties

Name

Name eighty-one million six hundred eighteen thousand nine hundred

Notation

Scientific notation 8.1618900 × 10^7
Engineering notation 8.1618900 × 10^6

Prime Factorization of 81618900

Prime Factorization 2 × 2 × 15 × 5 × 11 × 24733

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 40809450
Product of the distinct prime numbers

The prime factorization of 81618900 is 2 × 2 × 15 × 5 × 11 × 24733. Since it has a total of 6 prime factors.

Most popular turbo-numbers

3, 1, 7, 59, 232, 83, 7204, 1209, 39295, 55466, 539371, 176178, 403166, 8872741, 19283082, 99741041, 647109443, 655623963, 7636811283, 4531604868

Basic calculations (n = 81618900)

Multiplication

n×y
n×2 163237800
n×3 244856700
n×4 326475600
n×5 408094500

Division

n÷y
n÷2 40809450
n÷3 27206300
n÷3 20404725
n÷5 16323780

Exponentiation

ny
n2 6661644837210000
n3 5.4371612380376E+23
n4 4.4377511937127E+31
n5 3.6220437090451E+39

Nth Root

y√n
2√n 9034.3179045238
3√n 433.77406178892
4√n 95.049028950978
5√n 38.225937683644

Divisors of 81618900

1, 2, 4, 5, 10, 11, 15, 20, 22, 30, 44, 55, 60, 75, 110, 150, 165, 220, 300, 330, 660, 825, 1650, 3300, 24733, 49466, 98932, 123665, 247330, 272063, 370995, 494660, 544126, 741990, 1088252, 1360315, 1483980, 1854975, 2720630, 3709950, 4080945, 5441260, 7419900, 8161890, 16323780, 20404725, 40809450, 81618900

48 divisors

τ Total Divisors 48
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81618899
Sum of the proper positive divisors of n
A Arithmetic Mean 0.020833333333333
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 48
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81618900 can be divided by 48 positive divisors. The sum of these divisors (counting 81618900) is 1, the average is 0.020833333333333.

Base conversion 81618900

Base System Value
2 Binary 100110111010110011111010100
3 Ternary 12200120200002020
4 Quaternary 10313112133110
5 Quinary 131343301100
6 Senary 12033213140
8 Octal 467263724
10 Decimal 81618900
12 Duodecimal 234011b0
16 Hexadecimal 4dd67d4
20 Vigesimal 15a2750
36 Base36 1cldjo

Cryptographic Hash Functions

md5 d583520952085ca91d540c77f377b15d
sha1 b3a8eeaeb29db6273dcea85b75db1ff80b003e51
sha256 09ad01c7e7b818c05154f638f6057f7fa57c3b03476b7bb5ad7702018c928c37
sha512 e24012417b6d7168cf5cc93dd849455c1e2ad15e63b328478dca97648c237b8b1e76552fd296fa6e74d83a754127900e893cd4246b01bdb17f812fa32ba01671
ripemd-160 ecb89b5c3b9d9ee1402ef11f331b8bc48cbc962c

81618900 as geometric shapes

Circle

Radius = n
Diameter 163237800
Circumference 512826673.26816
Area 2.0928174481403E+16

Sphere

Radius = n
Volume 2.2775127735736E+24
Surface area 8.3712697925613E+16
Circumference 512826673.26816

Square

Length = n
Perimeter 326475600
Area 6661644837210000
Diagonal 115426555.32597

Cube

Length = n
Surface area 39969869023260000
Volume 5.4371612380376E+23
Space diagonal 141368081.65788

Equilateral Triangle

Length = n
Perimeter 244856700
Area 2.8845768300067E+15
Altitude 70684040.828942

Triangular Pyramid

Length = n
Surface area 2.8845768300067E+15
Volume 6.4077559697017E+22
Height 38475518.441991