81409880 (number)

81409880 is an even 8-digits composite number following 81409879 and preceding 81409881. In scientific notation, it is written as 8.1409880 × 10^7. The sum of its digits is 38. It has a total of 7 prime factors and 64 positive divisors. There are 30819712 positive integers (up to 81409880) that are relatively prime to 81409880.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred nine thousand eight hundred eighty

Notation

Scientific notation 8.1409880 × 10^7
Engineering notation 8.1409880 × 10^6

Prime Factorization of 81409880

Prime Factorization 2 × 2 × 2 × 5 × 23 × 107 × 827

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 20352470
Product of the distinct prime numbers

The prime factorization of 81409880 is 2 × 2 × 2 × 5 × 23 × 107 × 827. Since it has a total of 7 prime factors.

Most popular turbo-numbers

4, 2, 12, 70, 389, 842, 7881, 7408, 12975, 90915, 297910, 752082, 3216389, 1966531, 25766645, 78357341, 544065373, 940810987, 2756267781, 973383525

Basic calculations (n = 81409880)

Multiplication

n×y
n×2 162819760
n×3 244229640
n×4 325639520
n×5 407049400

Division

n÷y
n÷2 40704940
n÷3 27136626.666667
n÷3 20352470
n÷5 16281976

Exponentiation

ny
n2 6627568561614400
n3 5.395495612928E+23
n4 4.39246650389E+31
n5 3.575901709857E+39

Nth Root

y√n
2√n 9022.7423769052
3√n 433.40345742212
4√n 94.988117030001
5√n 38.206338833869

Divisors of 81409880

1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 107, 115, 184, 214, 230, 428, 460, 535, 827, 856, 920, 1070, 1654, 2140, 2461, 3308, 4135, 4280, 4922, 6616, 8270, 9844, 12305, 16540, 19021, 19688, 24610, 33080, 38042, 49220, 76084, 88489, 95105, 98440, 152168, 176978, 190210, 353956, 380420, 442445, 707912, 760840, 884890, 1769780, 2035247, 3539560, 4070494, 8140988, 10176235, 16281976, 20352470, 40704940, 81409880

64 divisors

τ Total Divisors 64
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81409879
Sum of the proper positive divisors of n
A Arithmetic Mean 0.015625
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 64
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81409880 can be divided by 64 positive divisors. The sum of these divisors (counting 81409880) is 1, the average is 0.015625.

Base conversion 81409880

Base System Value
2 Binary 100110110100011011101011000
3 Ternary 12200012001100202
4 Quaternary 10312203131120
5 Quinary 131320104010
6 Senary 12024521332
8 Octal 466433530
10 Decimal 81409880
12 Duodecimal 23320248
16 Hexadecimal 4da3758
20 Vigesimal 158g4e0
36 Base36 1cgw9k

Cryptographic Hash Functions

md5 063528177885df6b0044f206fae2d36e
sha1 365d9613224e1c18d7c7ce8d661f443220b40e5e
sha256 39f8c8d915d05671e7d54a2480cc9c87c5dc74b11365a82fbebd329ed1c7dd71
sha512 2ae2525098d9525fc0d9a08f21a789e4935a1d7d625c8a5d29c5c5c97e73dd329043c59ffe36cec69b05d69290b4973510fec328e3c95773d6ff6142dad46d25
ripemd-160 51672c23bbf88742bf739bf209cba7a7abda6092

81409880 as geometric shapes

Circle

Radius = n
Diameter 162819760
Circumference 511513361.87525
Area 2.082112070433E+16

Sphere

Radius = n
Volume 2.2600599173401E+24
Surface area 8.3284482817322E+16
Circumference 511513361.87525

Square

Length = n
Perimeter 325639520
Area 6627568561614400
Diagonal 115130956.40717

Cube

Length = n
Surface area 39765411369686400
Volume 5.395495612928E+23
Space diagonal 141006048.39809

Equilateral Triangle

Length = n
Perimeter 244229640
Area 2.8698213698406E+15
Altitude 70503024.199043

Triangular Pyramid

Length = n
Surface area 2.8698213698406E+15
Volume 6.3586525596061E+22
Height 38376985.469055