388965985 is an odd 9-digits composite number following 388965984
and preceding 388965986 . In scientific notation, it is written as 3.88965985 × 10^8.
The sum of its digits is 61. It has a total of 2 prime factors and 4 positive divisors.
There are 311172784 positive integers (up to 388965985) that are relatively prime to 388965985.
388965985 has 4 divisors, whose sum is 466759188
The reverse of 388965985 is 589569883
Previous prime number is 5
Is Prime? no Number parity odd Number length 9 Sum of Digits 61 Digital Root 7
Name
three hundred eighty-eight million nine hundred sixty-five thousand nine hundred eighty-five
Scientific notation
3.88965985 × 10^8
Engineering notation
3.88965985 × 10^6
Prime Factorization
5 × 77793197
Composite number
ω Distinct Factors
2 Total number of distinct prime factors
Ω Total Factors
2 Total number of prime factors
rad Radical
388965985 Product of the distinct prime numbers
The prime factorization of 388965985 is 5 × 77793197.
Since it has a total of 2 prime factors.
8 , 1 , 9 , 23 , 492 , 436 , 1160 , 4894 , 31277 , 83437 , 870371 , 210772 , 9725598 , 9847628 , 60746877 , 9544912 , 156602150 , 328875819 , 550677872 , 6902338134
n×2
777931970
n×3
1166897955
n×4
1555863940
n×5
1944829925
n÷2
194482992.5
n÷3
129655328.33333
n÷3
97241496.25
n÷5
77793197
n2
151294537487020225
n3
5.8848428798758E+25
n4
2.2890037073411E+34
n5
8.903445816946E+42
2 √n19722.220589984
3 √n729.96808830289
4 √n140.43582374161
5 √n52.237492861536
4 divisors
τ Total Divisors
4 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-388965984 Sum of the proper positive divisors of n
A Arithmetic Mean
0.25 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
4 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 388965985 can be divided by 4 positive divisors.
The sum of these divisors (counting 388965985) is 1, the average is 0.25.
Base
System
Value
2
Binary
10111001011110010011001100001
3
Ternary
1000002220112000121
4
Quaternary
113023302121201
5
Quinary
1244033402420
6
Senary
102332520241
8
Octal
2713623141
10
Decimal
388965985
12
Duodecimal
aa320081
16
Hexadecimal
172f2661
20
Vigesimal
61b0ej5
36
Base36
6fkw2p
md5
54331ae7a5227a90ff103578a36261d6
sha1
3217aa64b7cb7b946c954bfc5fcee80e348902f4
sha256
2e7e2a2f2e3ff8b0f7e16463f4e0b4f981e13b441d9bcd0362dad679bd85b2ed
sha512
320c6b8a6ab83489062ece2293acfd9bdb17eabc40e373ba6f15bbf14b49f14e96528df92b26ea2ae5ac1e0601d40d76a758969399d6a88bb1338c0decc6e8f9
ripemd-160
6c65c93a32d10c62e88d72a36c654c0dca7e0dd4
Diameter
777931970
Circumference
2443945361.9446
Area
4.7530580749749E+17
Volume
2.4650372211931E+26
Surface area
1.90122322999E+18
Circumference
2443945361.9446
Perimeter
1555863940
Area
151294537487020225
Diagonal
550080971.28881
Surface area
907767224922121350
Volume
5.8848428798758E+25
Space diagonal
673708848.43607
Perimeter
1166897955
Area
6.5512456458788E+16
Altitude
336854424.21804
Surface area
6.5512456458788E+16
Volume
6.9353538442959E+24
Height
183360323.76294