81979528 is an even 8-digits composite number following 81979527
and preceding 81979529 . In scientific notation, it is written as 8.1979528 × 10^7.
The sum of its digits is 49. It has a total of 5 prime factors and 16 positive divisors.
There are 38832336 positive integers (up to 81979528) that are relatively prime to 81979528.
81979528 has 16 divisors, whose sum is 161802000
The reverse of 81979528 is 82597918
Previous prime number is 19
Is Prime? no
Number parity even
Number length 8
Sum of Digits 49
Digital Root 4
Name
eighty-one million nine hundred seventy-nine thousand five hundred twenty-eight
Scientific notation
8.1979528 × 10^7
Engineering notation
8.1979528 × 10^6
Prime Factorization
2 × 2 × 2 × 19 × 539339
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
20494882
Product of the distinct prime numbers
The prime factorization of 81979528 is 2 × 2 × 2 × 19 × 539339.
Since it has a total of 5 prime factors.
2 , 10 , 83 , 6 , 162 , 206 , 4776 , 6020 , 34709 , 79903 , 817716 , 855482 , 3152521 , 8397237 , 62798405 , 43797593 , 495209528 , 43945383 , 8792483618 , 4783497374
n×2
163959056
n×3
245938584
n×4
327918112
n×5
409897640
n÷2
40989764
n÷3
27326509.333333
n÷3
20494882
n÷5
16395905.6
n2
6720643011102784
n3
5.509551419067E+23
n4
4.5167042482685E+31
n5
3.7027728238864E+39
2 √n
9054.2546904756
3 √n
434.41199100468
4 √n
95.153847481201
5 √n
38.259657922401
1 , 2 , 4 , 8 , 19 , 38 , 76 , 152 , 539339 , 1078678 , 2157356 , 4314712 , 10247441 , 20494882 , 40989764 , 81979528
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
-81979527
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 81979528 can be divided by 16 positive divisors.
The sum of these divisors (counting 81979528) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100111000101110100010001000
3
Ternary
12201020222202211
4
Quaternary
10320232202020
5
Quinary
131441321103
6
Senary
12045034504
8
Octal
470564210
10
Decimal
81979528
12
Duodecimal
23555a34
16
Hexadecimal
4e2e888
20
Vigesimal
15c78g8
36
Base36
1ct3t4
md5
0d4a337ed957e3ec8e19c05482fc01ea
sha1
f099de9521f8ebf44634e42ccbae36690665b6ea
sha256
241105fc27a1a848b86043227be142bd6c57d8905327a821bb6f912bf8219c3f
sha512
5ad28474290a12df4aac1522d104e3d52b5e2cb14a71af05874ac2c64d9627dcbf7730e6eb1d6c1c58414f05d9c5fba9bbd582452ecb859b1c78b7bd1056ad03
ripemd-160
bbe95e82c8b33f1b2550a7fc05213ab535c4ca70
Diameter
163959056
Circumference
515092565.81912
Area
2.111352271108E+16
Volume
2.3078355016955E+24
Surface area
8.445409084432E+16
Circumference
515092565.81912
Perimeter
327918112
Area
6720643011102784
Diagonal
115936560.33454
Surface area
40323858066616704
Volume
5.509551419067E+23
Space diagonal
141992707.67652
Perimeter
245938584
Area
2.9101237886907E+15
Altitude
70996353.838258
Surface area
2.9101237886907E+15
Volume
6.4930686161971E+22
Height
38645520.111515