487991 is an odd 6-digits composite number following 487990
and preceding 487992 . In scientific notation, it is written as 4.87991 × 10^5.
The sum of its digits is 38. It has a total of 4 prime factors and 12 positive divisors.
There are 399168 positive integers (up to 487991) that are relatively prime to 487991.
487991 has 12 divisors, whose sum is 593712
The reverse of 487991 is 199784
Previous prime number is 23
Is Prime? no
Number parity odd
Number length 6
Sum of Digits 38
Digital Root 2
Name
four hundred eighty-seven thousand nine hundred ninety-one
Scientific notation
4.87991 × 10^5
Engineering notation
4.87991 × 10^3
Prime Factorization
7 × 7 × 23 × 433
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
69713
Product of the distinct prime numbers
The prime factorization of 487991 is 7 × 7 × 23 × 433.
Since it has a total of 4 prime factors.
7 , 6 , 2 , 2 , 156 , 475 , 9621 , 4433 , 82632 , 44920 , 308595 , 485608 , 2262715 , 1668457 , 27751441 , 72996364 , 624129606 , 475676204 , 5175394125 , 3997670960
n×2
975982
n×3
1463973
n×4
1951964
n×5
2439955
n÷2
243995.5
n÷3
162663.66666667
n÷3
121997.75
n÷5
97598.2
n2
238135216081
n3
116207842230583271
n4
5.6708381137945E+22
n5
2.7673179619887E+28
2 √n
698.56352610196
3 √n
78.729459663513
4 √n
26.430352364317
5 √n
13.73037385416
1 , 7 , 23 , 49 , 161 , 433 , 1127 , 3031 , 9959 , 21217 , 69713 , 487991
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
-487990
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 487991 can be divided by 12 positive divisors.
The sum of these divisors (counting 487991) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1110111001000110111
3
Ternary
220210101202
4
Quaternary
1313020313
5
Quinary
111103431
6
Senary
14243115
8
Octal
1671067
10
Decimal
487991
12
Duodecimal
1b649b
16
Hexadecimal
77237
20
Vigesimal
30jjb
36
Base36
agjb
md5
842d7e572b5c4571ae7e6e95241a921b
sha1
f46bf4ce02a425e4312c16b72b98282e7f4e8f3d
sha256
ebb987b9c028073e4bddb0ec75a30c070917714b917d703a6e739f10e44014e3
sha512
e5ed376f615dc36270f4577d8d0f62111540c806de7455a5a124052b498ab24c7fcd9160dc48e7e2d6f1b03bba58d3d2c7d3cc7cde4c14d97f2ab0fff3de0cd8
ripemd-160
f071faea854517d26b36b40b223497d8042a497b
Diameter
975982
Circumference
3066137.8812359
Area
748123845401.09
Volume
4.8677027125483E+17
Surface area
2992495381604.4
Circumference
3066137.8812359
Perimeter
1951964
Area
238135216081
Diagonal
690123.49051601
Surface area
1428811296486
Volume
116207842230583271
Space diagonal
845225.20563634
Perimeter
1463973
Area
103115573330.92
Altitude
422612.60281817
Surface area
103115573330.92
Volume
1.3695225544717E+16
Height
230041.16350534