138187905 is an odd 9-digits composite number following 138187904
and preceding 138187906 . In scientific notation, it is written as 1.38187905 × 10^8.
The sum of its digits is 42. It has a total of 4 prime factors and 16 positive divisors.
There are 72690048 positive integers (up to 138187905) that are relatively prime to 138187905.
138187905 has 16 divisors, whose sum is 224131200
The reverse of 138187905 is 509781831
Previous prime number is 73
Is Prime? no Number parity odd Number length 9 Sum of Digits 42 Digital Root 6
Name
one hundred thirty-eight million one hundred eighty-seven thousand nine hundred five
Scientific notation
1.38187905 × 10^8
Engineering notation
1.38187905 × 10^6
Prime Factorization
3 × 5 × 73 × 126199
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
4 Total number of prime factors
rad Radical
138187905 Product of the distinct prime numbers
The prime factorization of 138187905 is 3 × 5 × 73 × 126199.
Since it has a total of 4 prime factors.
9 , 6 , 92 , 20 , 562 , 609 , 1067 , 698 , 76632 , 13287 , 642283 , 382241 , 6362162 , 4206091 , 91133152 , 44992951 , 185836037 , 115560093 , 1715322974 , 2907362062
n×2
276375810
n×3
414563715
n×4
552751620
n×5
690939525
n÷2
69093952.5
n÷3
46062635
n÷3
34546976.25
n÷5
27637581
n2
19095897088289025
n3
2.6388220127263E+24
n4
3.6465328560653E+32
n5
5.0390673589332E+40
2 √n11755.335171742
3 √n516.9993664777
4 √n108.42202346268
5 √n42.471148623072
1 , 3 , 5 , 15 , 73 , 219 , 365 , 1095 , 126199 , 378597 , 630995 , 1892985 , 9212527 , 27637581 , 46062635 , 138187905
16 divisors
τ Total Divisors
16 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-138187904 Sum of the proper positive divisors of n
A Arithmetic Mean
0.0625 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
16 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 138187905 can be divided by 16 positive divisors.
The sum of these divisors (counting 138187905) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1000001111001001010010000001
3
Ternary
100122000200011120
4
Quaternary
20033021102001
5
Quinary
240334003110
6
Senary
21413502453
8
Octal
1017112201
10
Decimal
138187905
12
Duodecimal
3a341a29
16
Hexadecimal
83c9481
20
Vigesimal
233d9f5
36
Base36
2a9ugx
md5
1f04bd5fae66fc081d857456e1bdb01c
sha1
7c702e0c075e51e1cbff1b83f2c30d2028e16fa8
sha256
927ac0793924ade384a988957e9767deaabdb18faa0f6ac2d0bb09c3ad130127
sha512
50f3d1c0a667165b05c9ebd2cc09651f5e5c79df5fa1003a999758ff7ad5b66f611fdb5459e96edc86c0c176f175d63c3815dcf4081ca099a7095abd0fb86235
ripemd-160
e01fc69e7d088d98f00d04e60b3e55e488b9db50
Diameter
276375810
Circumference
868260214.32593
Area
5.9991530006276E+16
Volume
1.1053471799082E+25
Surface area
2.399661200251E+17
Circumference
868260214.32593
Perimeter
552751620
Area
19095897088289025
Diagonal
195427209.40692
Surface area
114575382529734150
Volume
2.6388220127263E+24
Space diagonal
239348472.4515
Perimeter
414563715
Area
8.2687659932558E+15
Altitude
119674236.22575
Surface area
8.2687659932558E+15
Volume
3.1098815659051E+23
Height
65142403.135642