81506747 (number)

81506747 is an odd 8-digits composite number following 81506746 and preceding 81506748. In scientific notation, it is written as 8.1506747 × 10^7. The sum of its digits is 38. It has a total of 4 prime factors and 12 positive divisors. There are 68852448 positive integers (up to 81506747) that are relatively prime to 81506747.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1506747 × 10^7
Engineering notation 8.1506747 × 10^6

Prime Factorization of 81506747

Prime Factorization 7 × 4067 × 7 × 409

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 11643821
Product of the distinct prime numbers

The prime factorization of 81506747 is 7 × 4067 × 7 × 409. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 5, 3, 41, 929, 522, 3751, 7736, 55345, 12654, 658701, 92068, 528197, 4514640, 99877349, 84852335, 629354240, 929622991, 4100131937, 4794597016

Basic calculations (n = 81506747)

Multiplication

n×y
n×2 163013494
n×3 244520241
n×4 326026988
n×5 407533735

Division

n÷y
n÷2 40753373.5
n÷3 27168915.666667
n÷3 20376686.75
n÷5 16301349.4

Exponentiation

ny
n2 6643349806522009
n3 5.4147783191269E+23
n4 4.4134096651816E+31
n5 3.5972266498731E+39

Nth Root

y√n
2√n 9028.1087166693
3√n 433.575286904
4√n 95.016360257954
5√n 38.215426608551

Divisors of 81506747

1, 7, 49, 409, 2863, 4067, 20041, 28469, 199283, 1663403, 11643821, 81506747

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81506746
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81506747 can be divided by 12 positive divisors. The sum of these divisors (counting 81506747) is 1, the average is 0.083333333333333.

Base conversion 81506747

Base System Value
2 Binary 100110110111011000110111011
3 Ternary 12200100222020102
4 Quaternary 10312323012323
5 Quinary 131331203442
6 Senary 12030550015
8 Octal 466730673
10 Decimal 81506747
12 Duodecimal 2336830b
16 Hexadecimal 4dbb1bb
20 Vigesimal 15986h7
36 Base36 1ciz0b

Cryptographic Hash Functions

md5 1c7c5fe51ce5c75379c224530f1357a1
sha1 c5e223c8dfbb52fdf91dbd5040153e0417d2301f
sha256 72698cc2f6bda943df6d940e01db21c613d5da07f5ccfa780ce081679702d697
sha512 4f845e040317980567b7184a42a050f4b70dd7a846ee59fd760350c147fbd849e4392926c84c8c2db454435d2249e16427bcc8fd6a26925567fa8d11ff0f8174
ripemd-160 da0eeeaebc9f57a2c5464d00517bbe699bab7efc

81506747 as geometric shapes

Circle

Radius = n
Diameter 163013494
Circumference 512121995.1864
Area 2.0870698947397E+16

Sphere

Radius = n
Volume 2.2681370384248E+24
Surface area 8.3482795789587E+16
Circumference 512121995.1864

Square

Length = n
Perimeter 326026988
Area 6643349806522009
Diagonal 115267947.03231

Cube

Length = n
Surface area 39860098839132054
Volume 5.4147783191269E+23
Space diagonal 141173826.96366

Equilateral Triangle

Length = n
Perimeter 244520241
Area 2.8766548493372E+15
Altitude 70586913.481831

Triangular Pyramid

Length = n
Surface area 2.8766548493372E+15
Volume 6.3813774467942E+22
Height 38422649.010771