81793985 (number)

81793985 is an odd 8-digits composite number following 81793984 and preceding 81793986. In scientific notation, it is written as 8.1793985 × 10^7. The sum of its digits is 50. It has a total of 5 prime factors and 32 positive divisors. There are 50803200 positive integers (up to 81793985) that are relatively prime to 81793985.

Interesting facts

Basic properties

Name

Name eighty-one million seven hundred ninety-three thousand nine hundred eighty-five

Notation

Scientific notation 8.1793985 × 10^7
Engineering notation 8.1793985 × 10^6

Prime Factorization of 81793985

Prime Factorization 35 × 7 × 13 × 61 × 421

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81793985
Product of the distinct prime numbers

The prime factorization of 81793985 is 35 × 7 × 13 × 61 × 421. Since it has a total of 5 prime factors.

Most popular turbo-numbers

5, 1, 85, 93, 758, 877, 8386, 6821, 86696, 89125, 94051, 243463, 4298243, 5595715, 78754064, 87167834, 288511293, 370600243, 1654157264, 7292666770

Basic calculations (n = 81793985)

Multiplication

n×y
n×2 163587970
n×3 245381955
n×4 327175940
n×5 408969925

Division

n÷y
n÷2 40896992.5
n÷3 27264661.666667
n÷3 20448496.25
n÷5 16358797

Exponentiation

ny
n2 6690255982180225
n3 5.4722269745261E+23
n4 4.4759525107098E+31
n5 3.6610599252171E+39

Nth Root

y√n
2√n 9044.0027089779
3√n 434.08401079186
4√n 95.099961666543
5√n 38.242323723786

Divisors of 81793985

1, 7, 13, 35, 61, 91, 245, 421, 427, 455, 793, 2135, 2947, 3185, 5473, 5551, 14735, 14945, 25681, 27755, 38311, 103145, 179767, 191555, 194285, 333853, 898835, 1340885, 2336971, 6291845, 11684855, 81793985

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81793984
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81793985 can be divided by 32 positive divisors. The sum of these divisors (counting 81793985) is 1, the average is 0.03125.

Base conversion 81793985

Base System Value
2 Binary 100111000000001001111000001
3 Ternary 12200220120020212
4 Quaternary 10320001033001
5 Quinary 131414401420
6 Senary 12041043505
8 Octal 470011701
10 Decimal 81793985
12 Duodecimal 23486595
16 Hexadecimal 4e013c1
20 Vigesimal 15b44j5
36 Base36 1cp4n5

Cryptographic Hash Functions

md5 84ee2597d99940072dc018bd0b44992f
sha1 747cfd50a5c7ec5ce7b988824e69eccb8191e2f1
sha256 7af10907440896b106dc0dc3f43660eb9eae43a41981c84cd3985e6fdac04b04
sha512 2147cd2b132995cd12a74a9b0702ab9e4900dd58206a76785f6830daeb12c335c6d94fdadc03f138e294c58cc26992a4025a31a246890e4342f0500acd05fa0f
ripemd-160 dabdf28ac03c21b3506a077895a9cdce4d0208d6

81793985 as geometric shapes

Circle

Radius = n
Diameter 163587970
Circumference 513926764.76767
Area 2.1018059044253E+16

Sphere

Radius = n
Volume 2.2922010749263E+24
Surface area 8.407223617701E+16
Circumference 513926764.76767

Square

Length = n
Perimeter 327175940
Area 6690255982180225
Diagonal 115674162.90754

Cube

Length = n
Surface area 40141535893081350
Volume 5.4722269745261E+23
Space diagonal 141671337.77353

Equilateral Triangle

Length = n
Perimeter 245381955
Area 2.8969658191944E+15
Altitude 70835668.886763

Triangular Pyramid

Length = n
Surface area 2.8969658191944E+15
Volume 6.4490813364656E+22
Height 38558054.302514