638961389 is an odd 9-digits composite number following 638961388
and preceding 638961390 . In scientific notation, it is written as 6.38961389 × 10^8.
The sum of its digits is 53. It has a total of 3 prime factors and 8 positive divisors.
There are 580694400 positive integers (up to 638961389) that are relatively prime to 638961389.
638961389 has 8 divisors, whose sum is 697264320
The reverse of 638961389 is 983169836
Previous prime number is 13729
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 53
Digital Root 8
Name
six hundred thirty-eight million nine hundred sixty-one thousand three hundred eighty-nine
Scientific notation
6.38961389 × 10^8
Engineering notation
6.38961389 × 10^6
Prime Factorization
11 × 13729 × 4231
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
638961389
Product of the distinct prime numbers
The prime factorization of 638961389 is 11 × 13729 × 4231.
Since it has a total of 3 prime factors.
3 , 10 , 63 , 70 , 646 , 680 , 1881 , 865 , 4507 , 29887 , 989472 , 208573 , 4130920 , 6454489 , 30578504 , 79377811 , 438184633 , 403817848 , 144715491 , 1469768505
n×2
1277922778
n×3
1916884167
n×4
2555845556
n×5
3194806945
n÷2
319480694.5
n÷3
212987129.66667
n÷3
159740347.25
n÷5
127792277.8
n2
408271656632809321
n3
2.6086982481143E+26
n4
1.666857456097E+35
n5
1.0650575554127E+44
2 √n
25277.685594215
3 √n
861.30745286995
4 √n
158.98957699867
5 √n
57.689254016265
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
-638961388
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 638961389 can be divided by 8 positive divisors.
The sum of these divisors (counting 638961389) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110000101011100011011101101
3
Ternary
1122112022121020122
4
Quaternary
212011130123231
5
Quinary
2302033231024
6
Senary
143223054325
8
Octal
4605343355
10
Decimal
638961389
12
Duodecimal
159ba13a5
16
Hexadecimal
2615c6ed
20
Vigesimal
9jda399
36
Base36
akf5rh
md5
ee40092276e7d4430739a1635e7691e5
sha1
586c96bac327c325df2149acdf0f691f7959d39b
sha256
e3d800c0b36ec14aa0f7d946506b9566934717f197bd5e2f3711633b438a1da1
sha512
e38461a5cf8e58297ac78c910a25d5e3f0e65a6458c2f3efa1f0191e4ddf5e501dd79b700910d80f387f638c19f43cc42384bcdc0490c073801cede346c6264e
ripemd-160
000a44d1938221f18d2dcd71dba850a94c46c295
Diameter
1277922778
Circumference
4014712811.2199
Area
1.2826232371466E+18
Volume
1.0927289668945E+27
Surface area
5.1304929485863E+18
Circumference
4014712811.2199
Perimeter
2555845556
Area
408271656632809321
Diagonal
903627862.15655
Surface area
2449629939796855926
Volume
2.6086982481143E+26
Space diagonal
1106713589.8228
Perimeter
1916884167
Area
1.7678681314459E+17
Altitude
553356794.91139
Surface area
1.7678681314459E+17
Volume
3.0743803688518E+25
Height
301209287.38552