81506784 (number)

81506784 is an even 8-digits composite number following 81506783 and preceding 81506785. In scientific notation, it is written as 8.1506784 × 10^7. The sum of its digits is 39. It has a total of 8 prime factors and 48 positive divisors. There are 26901888 positive integers (up to 81506784) that are relatively prime to 81506784.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred six thousand seven hundred eighty-four

Notation

Scientific notation 8.1506784 × 10^7
Engineering notation 8.1506784 × 10^6

Prime Factorization of 81506784

Prime Factorization 2 × 2 × 2 × 2 × 2 × 3 × 103 × 8243

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 8
Total number of prime factors
rad Radical 5094174
Product of the distinct prime numbers

The prime factorization of 81506784 is 2 × 2 × 2 × 2 × 2 × 3 × 103 × 8243. Since it has a total of 8 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81506784)

Multiplication

n×y
n×2 163013568
n×3 244520352
n×4 326027136
n×5 407533920

Division

n÷y
n÷2 40753392
n÷3 27168928
n÷3 20376696
n÷5 16301356.8

Exponentiation

ny
n2 6643355838022656
n3 5.4147856932485E+23
n4 4.413417679059E+31
n5 3.5972348146884E+39

Nth Root

y√n
2√n 9028.1107658247
3√n 433.57535251118
4√n 95.016371041125
5√n 38.21543007813

Divisors of 81506784

48 divisors

τ Total Divisors 48
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81506783
Sum of the proper positive divisors of n
A Arithmetic Mean 0.020833333333333
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 48
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81506784 can be divided by 48 positive divisors. The sum of these divisors (counting 81506784) is 1, the average is 0.020833333333333.

Base conversion 81506784

Base System Value
2 Binary 100110110111011000111100000
3 Ternary 12200100222021210
4 Quaternary 10312323013200
5 Quinary 131331204114
6 Senary 12030550120
8 Octal 466730740
10 Decimal 81506784
12 Duodecimal 23368340
16 Hexadecimal 4dbb1e0
20 Vigesimal 15986j4
36 Base36 1ciz1c

Cryptographic Hash Functions

md5 a05b8110ba8a794761d713c69e0e2520
sha1 ab5d2f263c72ddd99c067d4fb57715cbfa593c74
sha256 812086e7f47fc7151bc3048403bd80a8ed25cda5a3093284bb041ba942c59c6f
sha512 02fcacfb66cab1a99c9577c9468dd58c63ee21681e1b58b595aff464160247fe13da0b055e9f6b10536353b70e413ae33c5ff789feb16122eb999fed1a0c1baf
ripemd-160 2aa17ee0023898a7b1df128854b033ef12b47080

81506784 as geometric shapes

Circle

Radius = n
Diameter 163013568
Circumference 512122227.66426
Area 2.0870717895915E+16

Sphere

Radius = n
Volume 2.2681401272897E+24
Surface area 8.3482871583659E+16
Circumference 512122227.66426

Square

Length = n
Perimeter 326027136
Area 6643355838022656
Diagonal 115267999.35821

Cube

Length = n
Surface area 39860135028135936
Volume 5.4147856932485E+23
Space diagonal 141173891.04954

Equilateral Triangle

Length = n
Perimeter 244520352
Area 2.8766574610536E+15
Altitude 70586945.524771

Triangular Pyramid

Length = n
Surface area 2.8766574610536E+15
Volume 6.3813861372799E+22
Height 38422666.452738