81724900 (number)

81724900 is an even 8-digits composite number following 81724899 and preceding 81724901. In scientific notation, it is written as 8.1724900 × 10^7. The sum of its digits is 31. It has a total of 5 prime factors and 24 positive divisors. There are 31561600 positive integers (up to 81724900) that are relatively prime to 81724900.

Interesting facts

Basic properties

Name

Name eighty-one million seven hundred twenty-four thousand nine hundred

Notation

Scientific notation 8.1724900 × 10^7
Engineering notation 8.1724900 × 10^6

Prime Factorization of 81724900

Prime Factorization 2 × 2 × 25 × 29 × 28181

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40862450
Product of the distinct prime numbers

The prime factorization of 81724900 is 2 × 2 × 25 × 29 × 28181. Since it has a total of 5 prime factors.

Most popular turbo-numbers

1, 2, 20, 64, 11, 888, 4547, 7828, 98540, 97864, 478755, 790800, 2395749, 161972, 42752872, 63534208, 248699741, 946241811, 9823243620, 7172858943

Basic calculations (n = 81724900)

Multiplication

n×y
n×2 163449800
n×3 245174700
n×4 326899600
n×5 408624500

Division

n÷y
n÷2 40862450
n÷3 27241633.333333
n÷3 20431225
n÷5 16344980

Exponentiation

ny
n2 6678959280010000
n3 5.4583727926289E+23
n4 4.4608497064032E+31
n5 3.6456249617083E+39

Nth Root

y√n
2√n 9040.1825202813
3√n 433.96176406477
4√n 95.079874422936
5√n 38.235861478491

Divisors of 81724900

1, 2, 4, 25, 29, 50, 58, 100, 116, 725, 1450, 2900, 28181, 56362, 112724, 704525, 817249, 1409050, 1634498, 2818100, 3268996, 20431225, 40862450, 81724900

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81724899
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81724900 can be divided by 24 positive divisors. The sum of these divisors (counting 81724900) is 1, the average is 0.041666666666667.

Base conversion 81724900

Base System Value
2 Binary 100110111110000010111100100
3 Ternary 12200210001111011
4 Quaternary 10313300113210
5 Quinary 131410144100
6 Senary 12035352004
8 Octal 467602744
10 Decimal 81724900
12 Duodecimal 23452604
16 Hexadecimal 4df05e4
20 Vigesimal 15afc50
36 Base36 1cnnc4

Cryptographic Hash Functions

md5 661d287c55f26eaa8b9357dfdf2e9316
sha1 2bea03f567a0b8d08b933df8bcf79209baf49e2a
sha256 b1f13fbf51185af4936c5ce7808e0aebddd0581a2e3131011c3a93f25dc40e1f
sha512 3906ac3f4a4740af0900993441ac96a20c98f26416d57aec050eb6568ea46e7a9a5e3359ccdb73d0d2ead96bf2e26672c5037f11256823593a4c54555db1950b
ripemd-160 7a0faaf599f1473732ed92913396ff5e621bccfb

81724900 as geometric shapes

Circle

Radius = n
Diameter 163449800
Circumference 513492690.91072
Area 2.0982569407705E+16

Sphere

Radius = n
Volume 2.2863978487836E+24
Surface area 8.3930277630819E+16
Circumference 513492690.91072

Square

Length = n
Perimeter 326899600
Area 6678959280010000
Diagonal 115576461.96358

Cube

Length = n
Surface area 40073755680060000
Volume 5.4583727926289E+23
Space diagonal 141551679.04349

Equilateral Triangle

Length = n
Perimeter 245174700
Area 2.8920742036652E+15
Altitude 70775839.521743

Triangular Pyramid

Length = n
Surface area 2.8920742036652E+15
Volume 6.4327540265201E+22
Height 38525487.321195