81591330 (number)

81591330 is an even 8-digits composite number following 81591329 and preceding 81591331. In scientific notation, it is written as 8.1591330 × 10^7. The sum of its digits is 30. It has a total of 5 prime factors and 32 positive divisors. There are 20327424 positive integers (up to 81591330) that are relatively prime to 81591330.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1591330 × 10^7
Engineering notation 8.1591330 × 10^6

Prime Factorization of 81591330

Prime Factorization 2 × 15 × 17 × 1019 × 157

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81591330
Product of the distinct prime numbers

The prime factorization of 81591330 is 2 × 15 × 17 × 1019 × 157. Since it has a total of 5 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81591330)

Multiplication

n×y
n×2 163182660
n×3 244773990
n×4 326365320
n×5 407956650

Division

n÷y
n÷2 40795665
n÷3 27197110
n÷3 20397832.5
n÷5 16318266

Exponentiation

ny
n2 6657145131168900
n3 5.431653252551E+23
n4 4.4317581297446E+31
n5 3.6159304004417E+39

Nth Root

y√n
2√n 9032.791927195
3√n 433.72521486051
4√n 95.041001295204
5√n 38.223354871262

Divisors of 81591330

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 -81591329
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 81591330 can be divided by 32 positive divisors. The sum of these divisors (counting 81591330) is 1, the average is 0.03125.

Base conversion 81591330

Base System Value
2 Binary 100110111001111110000100010
3 Ternary 12200112021021010
4 Quaternary 10313033300202
5 Quinary 131341410310
6 Senary 12032441350
8 Octal 467176042
10 Decimal 81591330
12 Duodecimal 233a9256
16 Hexadecimal 4dcfc22
20 Vigesimal 159ii6a
36 Base36 1cks9u

Cryptographic Hash Functions

md5 0e2adf7901ee7bcdf28909b850fefa39
sha1 ab37cc1f205714c5506d2b1f97549906c1088b8f
sha256 54cc987f8f5dd85b8edcabbab9bbc7099f60ece8b391d4d7dd8b1260be23cc6a
sha512 95267a38dd77cfe0d3b2afc8586e09b3394f000c76acd01e158093f063130a78ea3fc9f079afeb22ad9b7f6fa2759f69dc62879697e3019b137c3f9f443f2c4b
ripemd-160 af5ed421b183a5690c1354f817b6de5cdcf06f7e

81591330 as geometric shapes

Circle

Radius = n
Diameter 163182660
Circumference 512653445.84924
Area 2.0914038237961E+16

Sphere

Radius = n
Volume 2.2752055940082E+24
Surface area 8.3656152951845E+16
Circumference 512653445.84924

Square

Length = n
Perimeter 326365320
Area 6657145131168900
Diagonal 115387565.45806

Cube

Length = n
Surface area 39942870787013400
Volume 5.431653252551E+23
Space diagonal 141320329.01712

Equilateral Triangle

Length = n
Perimeter 244773990
Area 2.8826284001361E+15
Altitude 70660164.508559

Triangular Pyramid

Length = n
Surface area 2.8826284001361E+15
Volume 6.4012647465546E+22
Height 38462521.819353