638961387 is an odd 9-digits composite number following 638961386
and preceding 638961388 . In scientific notation, it is written as 6.38961387 × 10^8.
The sum of its digits is 51. It has a total of 3 prime factors and 8 positive divisors.
There are 425915880 positive integers (up to 638961387) that are relatively prime to 638961387.
638961387 has 8 divisors, whose sum is 852065280
The reverse of 638961387 is 783169836
Previous prime number is 14431
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 51
Digital Root 6
Name
six hundred thirty-eight million nine hundred sixty-one thousand three hundred eighty-seven
Scientific notation
6.38961387 × 10^8
Engineering notation
6.38961387 × 10^6
Prime Factorization
3 × 14431 × 14759
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
638961387
Product of the distinct prime numbers
The prime factorization of 638961387 is 3 × 14431 × 14759.
Since it has a total of 3 prime factors.
8 , 8 , 47 , 54 , 331 , 797 , 7399 , 2749 , 24176 , 95878 , 728738 , 455457 , 6593631 , 8407518 , 56772693 , 44497319 , 58670290 , 74376197 , 4349132314 , 1243212913
n×2
1277922774
n×3
1916884161
n×4
2555845548
n×5
3194806935
n÷2
319480693.5
n÷3
212987129
n÷3
159740346.75
n÷5
127792277.4
n2
408271654076963769
n3
2.608698223618E+26
n4
1.6668574352274E+35
n5
1.0650575387442E+44
2 √n
25277.685554655
3 √n
861.30745197129
4 √n
158.98957687426
5 √n
57.68925398015
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
-638961386
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 638961387 can be divided by 8 positive divisors.
The sum of these divisors (counting 638961387) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110000101011100011011101011
3
Ternary
1122112022121020120
4
Quaternary
212011130123223
5
Quinary
2302033231022
6
Senary
143223054323
8
Octal
4605343353
10
Decimal
638961387
12
Duodecimal
159ba13a3
16
Hexadecimal
2615c6eb
20
Vigesimal
9jda397
36
Base36
akf5rf
md5
4981e065cf828719db004d249784a57d
sha1
81bf62f31f3cc2c716229674c9be9a502706c27d
sha256
222daeb8497f54eb0aff44ffd117063e5fd3ae4fb976672d07bc683452aaf26f
sha512
b65590a82dcbc95ee53db402243e5acd117dead805671792d28dcec261a365583b9d65f112059baa1a3945abeefd0af1eb213f2613e4502362d9ed847de6e49d
ripemd-160
ce2f893ec028ce1b6527fdf79b9b38dfcc443fc2
Diameter
1277922774
Circumference
4014712798.6535
Area
1.2826232291171E+18
Volume
1.0927289566335E+27
Surface area
5.1304929164686E+18
Circumference
4014712798.6535
Perimeter
2555845548
Area
408271654076963769
Diagonal
903627859.32812
Surface area
2449629924461782614
Volume
2.608698223618E+26
Space diagonal
1106713586.3587
Perimeter
1916884161
Area
1.7678681203787E+17
Altitude
553356793.17934
Surface area
1.7678681203787E+17
Volume
3.0743803399827E+25
Height
301209286.44271