81242020 (number)

81242020 is an even 8-digits composite number following 81242019 and preceding 81242021. In scientific notation, it is written as 8.1242020 × 10^7. The sum of its digits is 19. It has a total of 5 prime factors and 24 positive divisors. There are 32084832 positive integers (up to 81242020) that are relatively prime to 81242020.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred forty-two thousand twenty

Notation

Scientific notation 8.1242020 × 10^7
Engineering notation 8.1242020 × 10^6

Prime Factorization of 81242020

Prime Factorization 2 × 2 × 5 × 79 × 51419

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40621010
Product of the distinct prime numbers

The prime factorization of 81242020 is 2 × 2 × 5 × 79 × 51419. Since it has a total of 5 prime factors.

Most popular turbo-numbers

1, 2, 22, 1, 255, 551, 5158, 3435, 69273, 43025, 632785, 351663, 9003339, 1931469, 36879902, 42770789, 761992057, 716436861, 4466705157, 3429072689

Basic calculations (n = 81242020)

Multiplication

n×y
n×2 162484040
n×3 243726060
n×4 324968080
n×5 406210100

Division

n÷y
n÷2 40621010
n÷3 27080673.333333
n÷3 20310505
n÷5 16248404

Exponentiation

ny
n2 6600265813680400
n3 5.3621892724034E+23
n4 4.3563508811238E+31
n5 3.5391874541128E+39

Nth Root

y√n
2√n 9013.4355270341
3√n 433.10537253839
4√n 94.939114842272
5√n 38.190570202182

Divisors of 81242020

1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 51419, 102838, 205676, 257095, 514190, 1028380, 4062101, 8124202, 16248404, 20310505, 40621010, 81242020

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 -81242019
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 81242020 can be divided by 24 positive divisors. The sum of these divisors (counting 81242020) is 1, the average is 0.041666666666667.

Base conversion 81242020

Base System Value
2 Binary 100110101111010011110100100
3 Ternary 12122212112002201
4 Quaternary 10311322132210
5 Quinary 131244221040
6 Senary 12021144244
8 Octal 465723644
10 Decimal 81242020
12 Duodecimal 2325b084
16 Hexadecimal 4d7a7a4
20 Vigesimal 157f510
36 Base36 1cdaqs

Cryptographic Hash Functions

md5 94c4b4c9e9c115e627f52531f7a0337f
sha1 b58c9efa96118c6a28d190caa850e5f35ba69e2f
sha256 eed5db3abc756687f8be134506b3e43c8c078b18911276a84b2bea7acafd65e8
sha512 f191744d9d123c9580712463b80a43e00b85c44b92f2656d5bd053e8c3e6fea58ecf435dd4ddcdd7f16b9f5b8078a84626c94e3f6cc0ad2b2ce615bfbdc66069
ripemd-160 ed6f141ec809a18d494252e880665046000876e0

81242020 as geometric shapes

Circle

Radius = n
Diameter 162484040
Circumference 510458666.38959
Area 2.0735346591998E+16

Sphere

Radius = n
Volume 2.2461085900454E+24
Surface area 8.2941386367993E+16
Circumference 510458666.38959

Square

Length = n
Perimeter 324968080
Area 6600265813680400
Diagonal 114893566.51859

Cube

Length = n
Surface area 39601594882082400
Volume 5.3621892724034E+23
Space diagonal 140715306.34953

Equilateral Triangle

Length = n
Perimeter 243726060
Area 2.8579989331886E+15
Altitude 70357653.174763

Triangular Pyramid

Length = n
Surface area 2.8579989331886E+15
Volume 6.3194006608703E+22
Height 38297855.506195