138978818 is an even 9-digits composite number following 138978817
and preceding 138978819 . In scientific notation, it is written as 1.38978818 × 10^8.
The sum of its digits is 53. It has a total of 3 prime factors and 8 positive divisors.
There are 63172180 positive integers (up to 138978818) that are relatively prime to 138978818.
138978818 has 8 divisors, whose sum is 227419920
The reverse of 138978818 is 818879831
Previous prime number is 11
Is Prime? no Number parity even Number length 9 Sum of Digits 53 Digital Root 8
Name
one hundred thirty-eight million nine hundred seventy-eight thousand eight hundred eighteen
Scientific notation
1.38978818 × 10^8
Engineering notation
1.38978818 × 10^6
Prime Factorization
2 × 11 × 6317219
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
3 Total number of prime factors
rad Radical
138978818 Product of the distinct prime numbers
The prime factorization of 138978818 is 2 × 11 × 6317219.
Since it has a total of 3 prime factors.
1 , 8 , 2 , 95 , 488 , 779 , 2459 , 8133 , 592 , 8597 , 325569 , 633254 , 1322388 , 7251318 , 6130927 , 21858449 , 209274802 , 615332607 , 748297397 , 5331197389
n×2
277957636
n×3
416936454
n×4
555915272
n×5
694894090
n÷2
69489409
n÷3
46326272.666667
n÷3
34744704.5
n÷5
27795763.6
n2
19315111852677124
n3
2.6843914148229E+24
n4
3.7307354588143E+32
n5
5.184932043367E+40
2 √n11788.92777143
3 √n517.98383247343
4 √n108.57682888826
5 √n42.519654089512
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
-138978817 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 138978818 can be divided by 8 positive divisors.
The sum of these divisors (counting 138978818) is 1, the average is 0.125.
Base
System
Value
2
Binary
1000010010001010011000000010
3
Ternary
100200111212002122
4
Quaternary
20102022120002
5
Quinary
241034310233
6
Senary
21442444242
8
Octal
1022123002
10
Decimal
138978818
12
Duodecimal
3a663682
16
Hexadecimal
848a602
20
Vigesimal
238c70i
36
Base36
2aqsqq
md5
c2d9f8e3e85cdd8a1dd886e97d8d9886
sha1
90a71e30c9b133f7a598d84f0105bf8075899906
sha256
738c0514c38661dcbe7b3507c8ac4bea1b01d6513720931d6ace9495d866ea7c
sha512
d409e95bf720debc5243ec02af677837a5620606a23b35422f7a9d99d70d41b10e35da0580f851ed5abe110192434b6e55931d8111aaf287c2bac08003b256b4
ripemd-160
484f936993decf27a3719c2019408c7baf9f72a9
Diameter
277957636
Circumference
873229667.26679
Area
6.0680213499636E+16
Volume
1.1244352464223E+25
Surface area
2.4272085399854E+17
Circumference
873229667.26679
Perimeter
555915272
Area
19315111852677124
Diagonal
196545729.29818
Surface area
115890671116062744
Volume
2.6843914148229E+24
Space diagonal
240718373.95187
Perimeter
416936454
Area
8.3636887706782E+15
Altitude
120359186.97593
Surface area
8.3636887706782E+15
Volume
3.1635856213003E+23
Height
65515243.099394