1388266985 is an odd 10-digits composite number following 1388266984
and preceding 1388266986 . In scientific notation, it is written as 1.388266985 × 10^9.
The sum of its digits is 56. It has a total of 3 prime factors and 8 positive divisors.
There are 951954480 positive integers (up to 1388266985) that are relatively prime to 1388266985.
1388266985 has 8 divisors, whose sum is 1903909056
The reverse of 1388266985 is 5896628831
Previous prime number is 7
Is Prime? no Number parity odd Number length 10 Sum of Digits 56 Digital Root 2
Name
one billion three hundred eighty-eight million two hundred sixty-six thousand nine hundred eighty-five
Scientific notation
1.388266985 × 10^9
Engineering notation
1.388266985 × 10^9
Prime Factorization
5 × 7 × 39664771
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
3 Total number of prime factors
rad Radical
1388266985 Product of the distinct prime numbers
The prime factorization of 1388266985 is 5 × 7 × 39664771.
Since it has a total of 3 prime factors.
7 , 3 , 70 , 76 , 691 , 791 , 7713 , 9868 , 65757 , 59013 , 151622 , 737846 , 8474294 , 7736852 , 38557933 , 94682410 , 840145283 , 804721556 , 4400564676 , 7106969408
n×2
2776533970
n×3
4164800955
n×4
5553067940
n×5
6941334925
n÷2
694133492.5
n÷3
462755661.66667
n÷3
347066746.25
n÷5
277653397
n2
1927285221640990225
n3
2.6755864438826E+27
n4
3.7144283255558E+36
n5
5.1566182125179E+45
2 √n37259.454974543
3 √n1115.5550294265
4 √n193.02708352597
5 √n67.374351676312
8 divisors
τ Total Divisors
8 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-1388266984 Sum of the proper positive divisors of n
A Arithmetic Mean
0.125 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
8 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1388266985 can be divided by 8 positive divisors.
The sum of these divisors (counting 1388266985) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010101111110100010111101001
3
Ternary
10120202021021021202
4
Quaternary
1102233310113221
5
Quinary
10320344020420
6
Senary
345431213545
8
Octal
12257642751
10
Decimal
1388266985
12
Duodecimal
328b172b5
16
Hexadecimal
52bf45e9
20
Vigesimal
11dgd795
36
Base36
myjdnt
md5
77e7bbfeb2c818e44d0587672066d719
sha1
1ef3ea91b654d5d3bf2667baa793dad0ebaf9fa7
sha256
2ffb30e3111eeb064b902982c2ca6e759cdc7170f4c572a64e6b4f1ef4b40422
sha512
8b81bd68ebe449577b2d9acdf8cd3b1b9a570f6bc48413678080ef5177afb4d17f72d30cde8ac59e960af96deb09006c2f98662e5193f12ee9094d96addad75d
ripemd-160
6863a8de5038d20b4aa4f5a113c80b8f8a17907e
Diameter
2776533970
Circumference
8722738722.5945
Area
6.0547450936795E+18
Volume
1.1207470288195E+28
Surface area
2.4218980374718E+19
Circumference
8722738722.5945
Perimeter
5553067940
Area
1927285221640990225
Diagonal
1963305998.3818
Surface area
1.1563711329846E+19
Volume
2.6755864438826E+27
Space diagonal
2404548952.4905
Perimeter
4164800955
Area
8.3453898113971E+17
Altitude
1202274476.2452
Surface area
8.3453898113971E+17
Volume
3.1532088635336E+26
Height
654435332.79394