638961386 is an even 9-digits composite number following 638961385
and preceding 638961387 . In scientific notation, it is written as 6.38961386 × 10^8.
The sum of its digits is 50. It has a total of 3 prime factors and 8 positive divisors.
There are 269198880 positive integers (up to 638961386) that are relatively prime to 638961386.
638961386 has 8 divisors, whose sum is 960764004
The reverse of 638961386 is 683169836
Previous prime number is 413
Is Prime? no
Number parity even
Number length 9
Sum of Digits 50
Digital Root 5
Name
six hundred thirty-eight million nine hundred sixty-one thousand three hundred eighty-six
Scientific notation
6.38961386 × 10^8
Engineering notation
6.38961386 × 10^6
Prime Factorization
2 × 413 × 773561
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
638961386
Product of the distinct prime numbers
The prime factorization of 638961386 is 2 × 413 × 773561.
Since it has a total of 3 prime factors.
6 , 5 , 95 , 52 , 168 , 800 , 5895 , 8874 , 17537 , 93001 , 630122 , 40244 , 8502975 , 1649597 , 26520783 , 46591522 , 921250307 , 942925522 , 3827449249 , 5957454819
n×2
1277922772
n×3
1916884158
n×4
2555845544
n×5
3194806930
n÷2
319480693
n÷3
212987128.66667
n÷3
159740346.5
n÷5
127792277.2
n2
408271652799040996
n3
2.6086982113699E+26
n4
1.6668574247926E+35
n5
1.0650575304099E+44
2 √n
25277.685534874
3 √n
861.30745152197
4 √n
158.98957681205
5 √n
57.689253962093
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
-638961385
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 638961386 can be divided by 8 positive divisors.
The sum of these divisors (counting 638961386) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110000101011100011011101010
3
Ternary
1122112022121020112
4
Quaternary
212011130123222
5
Quinary
2302033231021
6
Senary
143223054322
8
Octal
4605343352
10
Decimal
638961386
12
Duodecimal
159ba13a2
16
Hexadecimal
2615c6ea
20
Vigesimal
9jda396
36
Base36
akf5re
md5
8740e7ea8bdf3166f894b5202dc115c5
sha1
98fce2726d2c745f3b6631a71cc9dde261fab6f9
sha256
6830bcc84e8b679b938929a253b1ce41a996aef42f96703dd6b63628f9e22757
sha512
af2131ae4dc77e8039cea5a2cc1df8f489efc16ffa093995e82aa29282ed94a9b4dc2736d2dc5fea6c5480975075a0ce09099af3328db83150ed94c72e85f579
ripemd-160
d22a0e1169ff64dc0d1f25609f44855f1f2916ce
Diameter
1277922772
Circumference
4014712792.3703
Area
1.2826232251024E+18
Volume
1.092728951503E+27
Surface area
5.1304929004097E+18
Circumference
4014712792.3703
Perimeter
2555845544
Area
408271652799040996
Diagonal
903627857.91391
Surface area
2449629916794245976
Volume
2.6086982113699E+26
Space diagonal
1106713584.6266
Perimeter
1916884158
Area
1.7678681148451E+17
Altitude
553356792.31331
Surface area
1.7678681148451E+17
Volume
3.0743803255481E+25
Height
301209285.9713