638993857 is an odd 9-digits composite number following 638993856
and preceding 638993858 . In scientific notation, it is written as 6.38993857 × 10^8.
The sum of its digits is 58. It has a total of 2 prime factors and 4 positive divisors.
There are 635682816 positive integers (up to 638993857) that are relatively prime to 638993857.
638993857 has 4 divisors, whose sum is 642304900
The reverse of 638993857 is 758399836
Previous prime number is 193
Is Prime? no Number parity odd Number length 9 Sum of Digits 58 Digital Root 4
Name
six hundred thirty-eight million nine hundred ninety-three thousand eight hundred fifty-seven
Scientific notation
6.38993857 × 10^8
Engineering notation
6.38993857 × 10^6
Prime Factorization
193 × 3310849
Composite number
ω Distinct Factors
2 Total number of distinct prime factors
Ω Total Factors
2 Total number of prime factors
rad Radical
638993857 Product of the distinct prime numbers
The prime factorization of 638993857 is 193 × 3310849.
Since it has a total of 2 prime factors.
10 , 1 , 74 , 4 , 673 , 347 , 3199 , 9040 , 20084 , 5341 , 368909 , 397916 , 5668448 , 5726776 , 15753092 , 82029745 , 168797466 , 329628904 , 9445039105 , 241965032
n×2
1277987714
n×3
1916981571
n×4
2555975428
n×5
3194969285
n÷2
319496928.5
n÷3
212997952.33333
n÷3
159748464.25
n÷5
127798771.4
n2
408313149283736449
n3
2.6090959412463E+26
n4
1.66719627878E+35
n5
1.0653281805537E+44
2 √n25278.327812575
3 √n861.3220413658
4 √n158.99159667283
5 √n57.689840285376
4 divisors
τ Total Divisors
4 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-638993856 Sum of the proper positive divisors of n
A Arithmetic Mean
0.25 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
4 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 638993857 can be divided by 4 positive divisors.
The sum of these divisors (counting 638993857) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110000101100100010111000001
3
Ternary
1122112101020210011
4
Quaternary
212011210113001
5
Quinary
2302040300412
6
Senary
143223504521
8
Octal
4605442701
10
Decimal
638993857
12
Duodecimal
159bb8141
16
Hexadecimal
261645c1
20
Vigesimal
9jde4ch
36
Base36
akfutd
md5
f1de1d2f83ad670a212423b8fa2d9172
sha1
724546cd56646907b0c00b6460c9432895ce8033
sha256
8e7916c2ef8f8163b1c32ec0fd5cac7ec886b51c775b7025c181e04dfc85d3df
sha512
346fb90f32a39374b7e540468d9f85f58733c1e9b969242df5b518c6d62acc279e6083813f161a56261e633d6bf9f78539f4a32186835677f1b2d40593c256dc
ripemd-160
62fd967822709b9ac83e50e047c64ad9893ea88a
Diameter
1277987714
Circumference
4014916813.6804
Area
1.2827535901539E+18
Volume
1.092895552204E+27
Surface area
5.1310143606156E+18
Circumference
4014916813.6804
Perimeter
2555975428
Area
408313149283736449
Diagonal
903673778.84249
Surface area
2449878895702418694
Volume
2.6090959412463E+26
Space diagonal
1106769826.0484
Perimeter
1916981571
Area
1.7680477998947E+17
Altitude
553384913.0242
Surface area
1.7680477998947E+17
Volume
3.0748490547026E+25
Height
301224592.9475