1388891387 is an odd 10-digits composite number following 1388891386
and preceding 1388891388 . In scientific notation, it is written as 1.388891387 × 10^9.
The sum of its digits is 56. It has a total of 3 prime factors and 8 positive divisors.
There are 1281548160 positive integers (up to 1388891387) that are relatively prime to 1388891387.
1388891387 has 8 divisors, whose sum is 1496318880
The reverse of 1388891387 is 7831988831
Previous prime number is 2711
Is Prime? no Number parity odd Number length 10 Sum of Digits 56 Digital Root 2
Name
one billion three hundred eighty-eight million eight hundred ninety-one thousand three hundred eighty-seven
Scientific notation
1.388891387 × 10^9
Engineering notation
1.388891387 × 10^9
Prime Factorization
13 × 2711 × 39409
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
3 Total number of prime factors
rad Radical
1388891387 Product of the distinct prime numbers
The prime factorization of 1388891387 is 13 × 2711 × 39409.
Since it has a total of 3 prime factors.
4 , 10 , 15 , 79 , 443 , 403 , 89 , 9507 , 55124 , 27600 , 151739 , 946535 , 9632311 , 9830932 , 2260000 , 60387781 , 815561591 , 772607400 , 2675943467 , 5842880173
n×2
2777782774
n×3
4166674161
n×4
5555565548
n×5
6944456935
n÷2
694445693.5
n÷3
462963795.66667
n÷3
347222846.75
n÷5
277778277.4
n2
1929019284882783769
n3
2.6791982701306E+27
n4
3.7211154014497E+36
n5
5.1682251311065E+45
2 √n37267.833140659
3 √n1115.722252397
4 √n193.04878435426
5 √n67.380411189925
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
-1388891386 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 1388891387 can be divided by 8 positive divisors.
The sum of these divisors (counting 1388891387) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010110010001100110011111011
3
Ternary
10120210102222210202
4
Quaternary
1102302030303323
5
Quinary
10321024011022
6
Senary
345452432415
8
Octal
12262146373
10
Decimal
1388891387
12
Duodecimal
32917870b
16
Hexadecimal
52c8ccfb
20
Vigesimal
11e0b897
36
Base36
mywrgb
md5
545ccf378e8457eaaec0c8c6c7182fa4
sha1
02c6baf806779bac09e7d1e3113611d0987e4935
sha256
82f61b2859856a56c43c7895beb7893775966f0250b6199f1241f556be56f3a0
sha512
b4bfbc9da44a9f5870ade2163698d042fd4bb3e2622bd195f6f8d829a0573fb14d7f8b912f05fc38e6b3eff56d1c5ddbfc5c8e7b47123715516c19b30a9dd8d4
ripemd-160
404f90b16fecb4bb973eced516b0cd42bc91f553
Diameter
2777782774
Circumference
8726661956.0667
Area
6.0601928140208E+18
Volume
1.1222599470604E+28
Surface area
2.4240771256083E+19
Circumference
8726661956.0667
Perimeter
5555565548
Area
1929019284882783769
Diagonal
1964189036.1586
Surface area
1.1574115709297E+19
Volume
2.6791982701306E+27
Space diagonal
2405630448.4788
Perimeter
4166674161
Area
8.3528985254929E+17
Altitude
1202815224.2394
Surface area
8.3528985254929E+17
Volume
3.1574654415877E+26
Height
654729678.71953