638994908 is an even 9-digits composite number following 638994907
and preceding 638994909 . In scientific notation, it is written as 6.38994908 × 10^8.
The sum of its digits is 56. It has a total of 3 prime factors and 6 positive divisors.
There are 319497452 positive integers (up to 638994908) that are relatively prime to 638994908.
638994908 has 6 divisors, whose sum is 1118241096
The reverse of 638994908 is 809499836
Previous prime number is 2
Is Prime? no
Number parity even
Number length 9
Sum of Digits 56
Digital Root 2
Name
six hundred thirty-eight million nine hundred ninety-four thousand nine hundred eight
Scientific notation
6.38994908 × 10^8
Engineering notation
6.38994908 × 10^6
Prime Factorization
2 × 2 × 159748727
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
319497454
Product of the distinct prime numbers
The prime factorization of 638994908 is 2 × 2 × 159748727.
Since it has a total of 3 prime factors.
4 , 5 , 51 , 61 , 358 , 333 , 1011 , 8565 , 56190 , 69391 , 674691 , 474709 , 6296356 , 1476883 , 29410195 , 64594208 , 643100496 , 260583551 , 7386361467 , 7966020515
n×2
1277989816
n×3
1916984724
n×4
2555979632
n×5
3194974540
n÷2
319497454
n÷3
212998302.66667
n÷3
159748727
n÷5
127798981.6
n2
408314492449928464
n3
2.6091088153811E+26
n4
1.6672072474464E+35
n5
1.065336941699E+44
2 √n
25278.348601125
3 √n
861.32251359203
4 √n
158.99166204907
5 √n
57.689859262705
6 divisors
τ
Total Divisors
6
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-638994907
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.16666666666667
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
6
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 638994908 can be divided by 6 positive divisors.
The sum of these divisors (counting 638994908) is 1, the average is 0.16666666666667.
Base
System
Value
2
Binary
100110000101100100100111011100
3
Ternary
1122112101022020002
4
Quaternary
212011210213130
5
Quinary
2302040314113
6
Senary
143223513432
8
Octal
4605444734
10
Decimal
638994908
12
Duodecimal
159bb8878
16
Hexadecimal
261649dc
20
Vigesimal
9jde758
36
Base36
akfvmk
md5
528db43e059f7230d078698391c97407
sha1
fd46d6291bb39cdd7977fa4d68516fc56f1aa28b
sha256
3d9a047f1866b6aee8c172b69b3ce38d279a647958d2e5bdb0a1f55e13410522
sha512
1f4e4472a9cac555ee7a533318d02ca228b58d05d2e3848059d7614ae7df73209ee36d4cd986a84a286cc5f5e1d57619c6a75696241e19eca028114e4484c943
ripemd-160
f7304ac4a0313306b3fe042b0629dfc5fc756ccd
Diameter
1277989816
Circumference
4014923417.3082
Area
1.2827578098349E+18
Volume
1.092900944909E+27
Surface area
5.1310312393398E+18
Circumference
4014923417.3082
Perimeter
2555979632
Area
408314492449928464
Diagonal
903675265.18095
Surface area
2449886954699570784
Volume
2.6091088153811E+26
Space diagonal
1106771646.4338
Perimeter
1916984724
Area
1.7680536159749E+17
Altitude
553385823.2169
Surface area
1.7680536159749E+17
Volume
3.0748642270159E+25
Height
301225088.39365