81330990 (number)

81330990 is an even 8-digits composite number following 81330989 and preceding 81330991. In scientific notation, it is written as 8.1330990 × 10^7. The sum of its digits is 33. It has a total of 6 prime factors and 64 positive divisors. There are 19147392 positive integers (up to 81330990) that are relatively prime to 81330990.

Interesting facts

Basic properties

Name

Name eighty-one million three hundred thirty thousand nine hundred ninety

Notation

Scientific notation 8.1330990 × 10^7
Engineering notation 8.1330990 × 10^6

Prime Factorization of 81330990

Prime Factorization 2 × 3 × 5 × 13 × 23 × 9067

Composite number
ω Distinct Factors 6
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 81330990
Product of the distinct prime numbers

The prime factorization of 81330990 is 2 × 3 × 5 × 13 × 23 × 9067. Since it has a total of 6 prime factors.

Most popular turbo-numbers

4, 7, 50, 84, 912, 507, 1557, 4156, 45330, 97072, 980864, 683395, 3153158, 5368012, 1032111, 1180451, 365366203, 145132906, 7332077388, 3071654390

Basic calculations (n = 81330990)

Multiplication

n×y
n×2 162661980
n×3 243992970
n×4 325323960
n×5 406654950

Division

n÷y
n÷2 40665495
n÷3 27110330
n÷3 20332747.5
n÷5 16266198

Exponentiation

ny
n2 6614729934380100
n3 5.3798253414577E+23
n4 4.3754652104784E+31
n5 3.5586091727877E+39

Nth Root

y√n
2√n 9018.3695865716
3√n 433.26341607006
4√n 94.965096675419
5√n 38.198931214373

Divisors of 81330990

1, 2, 3, 5, 6, 10, 13, 15, 23, 26, 30, 39, 46, 65, 69, 78, 115, 130, 138, 195, 230, 299, 345, 390, 598, 690, 897, 1495, 1794, 2990, 4485, 8970, 9067, 18134, 27201, 45335, 54402, 90670, 117871, 136005, 208541, 235742, 272010, 353613, 417082, 589355, 625623, 707226, 1042705, 1178710, 1251246, 1768065, 2085410, 2711033, 3128115, 3536130, 5422066, 6256230, 8133099, 13555165, 16266198, 27110330, 40665495, 81330990

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 -81330989
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 81330990 can be divided by 64 positive divisors. The sum of these divisors (counting 81330990) is 1, the average is 0.015625.

Base conversion 81330990

Base System Value
2 Binary 100110110010000001100101110
3 Ternary 12200001001010220
4 Quaternary 10312100030232
5 Quinary 131310042430
6 Senary 12023112210
8 Octal 466201456
10 Decimal 81330990
12 Duodecimal 232a2666
16 Hexadecimal 4d9032e
20 Vigesimal 158679a
36 Base36 1cf7e6

Cryptographic Hash Functions

md5 31d08bcad4587d19be839934300f8dab
sha1 ded58aeca790782f3c7eba128fb7c3949e6d3ab3
sha256 6b43d26640e37c50f946ed913a714472d19e7154519d9e555c2b99870c87dd9e
sha512 83973e6cf49fda6ae6db251ecf2fd58244d8b74d7cab78739a500e3fdf850b75f8f496b74b4c383fcc7b612bc13e41e7ac98bcd13eadddf7aab7fb743a6b2412
ripemd-160 afdb98d33132e70ae6c44315720604bffd1396a9

81330990 as geometric shapes

Circle

Radius = n
Diameter 162661980
Circumference 511017681.38637
Area 2.0780786967329E+16

Sphere

Radius = n
Volume 2.253495969376E+24
Surface area 8.3123147869316E+16
Circumference 511017681.38637

Square

Length = n
Perimeter 325323960
Area 6614729934380100
Diagonal 115019389.09923

Cube

Length = n
Surface area 39688379606280600
Volume 5.3798253414577E+23
Space diagonal 140869406.90988

Equilateral Triangle

Length = n
Perimeter 243992970
Area 2.8642620811733E+15
Altitude 70434703.454938

Triangular Pyramid

Length = n
Surface area 2.8642620811733E+15
Volume 6.3401849675733E+22
Height 38339796.36641