81330887 (number)

81330887 is an odd 8-digits composite number following 81330886 and preceding 81330888. In scientific notation, it is written as 8.1330887 × 10^7. The sum of its digits is 38. It has a total of 4 prime factors and 16 positive divisors. There are 67780800 positive integers (up to 81330887) that are relatively prime to 81330887.

Interesting facts

Basic properties

Name

Name eighty-one million three hundred thirty thousand eight hundred eighty-seven

Notation

Scientific notation 8.1330887 × 10^7
Engineering notation 8.1330887 × 10^6

Prime Factorization of 81330887

Prime Factorization 11 × 31 × 19 × 12553

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81330887
Product of the distinct prime numbers

The prime factorization of 81330887 is 11 × 31 × 19 × 12553. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 4, 66, 99, 357, 56, 8631, 9835, 44729, 10673, 248676, 292506, 1580371, 2781095, 38614827, 71941632, 414514937, 721254977, 8322485418, 2742131090

Basic calculations (n = 81330887)

Multiplication

n×y
n×2 162661774
n×3 243992661
n×4 325323548
n×5 406654435

Division

n÷y
n÷2 40665443.5
n÷3 27110295.666667
n÷3 20332721.75
n÷5 16266177.4

Exponentiation

ny
n2 6614713180206769
n3 5.3798049019681E+23
n4 4.3754430456401E+31
n5 3.5585866391989E+39

Nth Root

y√n
2√n 9018.3638760032
3√n 433.26323317073
4√n 94.965066608744
5√n 38.198921539114

Divisors of 81330887

1, 11, 19, 31, 209, 341, 589, 6479, 12553, 138083, 238507, 389143, 2623577, 4280573, 7393717, 81330887

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81330886
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81330887 can be divided by 16 positive divisors. The sum of these divisors (counting 81330887) is 1, the average is 0.0625.

Base conversion 81330887

Base System Value
2 Binary 100110110010000001011000111
3 Ternary 12200001001000002
4 Quaternary 10312100023013
5 Quinary 131310042022
6 Senary 12023111515
8 Octal 466201307
10 Decimal 81330887
12 Duodecimal 232a259b
16 Hexadecimal 4d902c7
20 Vigesimal 1586747
36 Base36 1cf7bb

Cryptographic Hash Functions

md5 ff673303ca8429cedce37890b834c9fb
sha1 892ff2e525531cfeff53d5d63f37f0b725e6fa29
sha256 416e9908e4ed7ab4c27c61d46daedfb11ac72a694e4495d395d9d94e92b20986
sha512 afb0268ac93dd067f71c15b6249416bffa29e37b192d18c12d8f84f313b8c34b111f1bb516f5d24b9ac7f3b67c887abe72fdd2240addf801c4036b3abf384a4b
ripemd-160 405ff2e86883013a10c3af80d4e7cd601c4e238d

81330887 as geometric shapes

Circle

Radius = n
Diameter 162661774
Circumference 511017034.21828
Area 2.0780734332541E+16

Sphere

Radius = n
Volume 2.2534874077026E+24
Surface area 8.3122937330165E+16
Circumference 511017034.21828

Square

Length = n
Perimeter 325323548
Area 6614713180206769
Diagonal 115019243.43523

Cube

Length = n
Surface area 39688279081240614
Volume 5.3798049019681E+23
Space diagonal 140869228.50864

Equilateral Triangle

Length = n
Perimeter 243992661
Area 2.8642548264034E+15
Altitude 70434614.254322

Triangular Pyramid

Length = n
Surface area 2.8642548264034E+15
Volume 6.3401608794038E+22
Height 38339747.811745