81491304 (number)

81491304 is an even 8-digits composite number following 81491303 and preceding 81491305. In scientific notation, it is written as 8.1491304 × 10^7. The sum of its digits is 30. It has a total of 7 prime factors and 64 positive divisors. There are 25560576 positive integers (up to 81491304) that are relatively prime to 81491304.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred ninety-one thousand three hundred four

Notation

Scientific notation 8.1491304 × 10^7
Engineering notation 8.1491304 × 10^6

Prime Factorization of 81491304

Prime Factorization 2 × 2 × 2 × 3 × 19 × 173 × 1033

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 20372826
Product of the distinct prime numbers

The prime factorization of 81491304 is 2 × 2 × 2 × 3 × 19 × 173 × 1033. Since it has a total of 7 prime factors.

Most popular turbo-numbers

5, 3, 49, 48, 249, 987, 4196, 4752, 32964, 60852, 210277, 632279, 288047, 5227646, 82995987, 55674462, 168683424, 975344650, 1994622583, 9846951914

Basic calculations (n = 81491304)

Multiplication

n×y
n×2 162982608
n×3 244473912
n×4 325965216
n×5 407456520

Division

n÷y
n÷2 40745652
n÷3 27163768
n÷3 20372826
n÷5 16298260.8

Exponentiation

ny
n2 6640832627620416
n3 5.4117011047053E+23
n4 4.4100657988068E+31
n5 3.5938201267057E+39

Nth Root

y√n
2√n 9027.2534028906
3√n 433.54790215234
4√n 95.011859274991
5√n 38.213978371229

Divisors of 81491304

1, 2, 3, 4, 6, 8, 12, 19, 24, 38, 57, 76, 114, 152, 173, 228, 346, 456, 519, 692, 1033, 1038, 1384, 2066, 2076, 3099, 3287, 4132, 4152, 6198, 6574, 8264, 9861, 12396, 13148, 19627, 19722, 24792, 26296, 39254, 39444, 58881, 78508, 78888, 117762, 157016, 178709, 235524, 357418, 471048, 536127, 714836, 1072254, 1429672, 2144508, 3395471, 4289016, 6790942, 10186413, 13581884, 20372826, 27163768, 40745652, 81491304

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 -81491303
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 81491304 can be divided by 64 positive divisors. The sum of these divisors (counting 81491304) is 1, the average is 0.015625.

Base conversion 81491304

Base System Value
2 Binary 100110110110111010101101000
3 Ternary 12200100012001110
4 Quaternary 10312313111220
5 Quinary 131330210204
6 Senary 12030350320
8 Octal 466672550
10 Decimal 81491304
12 Duodecimal 2335b3a0
16 Hexadecimal 4db7568
20 Vigesimal 1596854
36 Base36 1cin3c

Cryptographic Hash Functions

md5 6526f3d71cd494d7a7a1f4c1db3747ee
sha1 deee0e8a99e090177e55e1701784be31306b11aa
sha256 1d5babe9f06658cc400d068de8ddc2cb2174e0b5d1d06895513a21c92e29b27f
sha512 eefb116ce0f84cf04e6ed2471d19425ce92d17e0250d8876438a545e64cebbac9dc715aeacd01d37001fb26bd3c8a9556d66d6ea851c71e09b604eac7894517b
ripemd-160 8c3da5f48a4e5b4a7bf39ad97c7fbfbc7a639444

81491304 as geometric shapes

Circle

Radius = n
Diameter 162982608
Circumference 512024963.95571
Area 2.0862790996652E+16

Sphere

Radius = n
Volume 2.2668480578621E+24
Surface area 8.3451163986607E+16
Circumference 512024963.95571

Square

Length = n
Perimeter 325965216
Area 6640832627620416
Diagonal 115246107.33227

Cube

Length = n
Surface area 39844995765722496
Volume 5.4117011047053E+23
Space diagonal 141147078.90304

Equilateral Triangle

Length = n
Perimeter 244473912
Area 2.8755648788999E+15
Altitude 70573539.45152

Triangular Pyramid

Length = n
Surface area 2.8755648788999E+15
Volume 6.3777509148198E+22
Height 38415369.110756