388618921 is an odd 9-digits prime number following 388618920
and preceding 388618922 . In scientific notation, it is written as 3.88618921 × 10^8.
The sum of its digits is 46. It has a total of 1 prime factors and 2 positive divisors.
There are 388618920 positive integers (up to 388618921) that are relatively prime to 388618921.
388618921 has 2 divisors, whose sum is 388618922
The reverse of 388618921 is 129816883
Previous prime number is 1
Is Prime? yes Number parity odd Number length 9 Sum of Digits 46 Digital Root 1
Name
three hundred eighty-eight million six hundred eighteen thousand nine hundred twenty-one
Scientific notation
3.88618921 × 10^8
Engineering notation
3.88618921 × 10^6
Prime Factorization
388618921
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
388618921 Product of the distinct prime numbers
The prime factorization of 388618921 is 388618921.
Since it has a total of 1 prime factors.
3 , 8 , 24 , 1 , 391 , 710 , 2686 , 1777 , 71308 , 33979 , 86227 , 217870 , 6018755 , 2404418 , 95014536 , 26435864 , 27858111 , 88846046 , 1295824044 , 4707011168
n×2
777237842
n×3
1165856763
n×4
1554475684
n×5
1943094605
n÷2
194309460.5
n÷3
129539640.33333
n÷3
97154730.25
n÷5
77723784.2
n2
151024665759204241
n3
5.8691042651728E+25
n4
2.2808449667679E+34
n5
8.8637950995364E+42
2 √n19713.419820011
3 √n729.75091332878
4 √n140.40448646682
5 √n52.228167507615
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
388618922 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
194309461 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
19713.419845374 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999948536 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 388618921 can be divided by 2 positive divisors.
The sum of these divisors (counting 388618921) is 388618922, the average is 194309461.
Base
System
Value
2
Binary
10111001010011101101010101001
3
Ternary
1000002020212221101
4
Quaternary
113022131222221
5
Quinary
1243441301141
6
Senary
102321241401
8
Octal
2712355251
10
Decimal
388618921
12
Duodecimal
aa193261
16
Hexadecimal
1729daa9
20
Vigesimal
618h761
36
Base36
6fdga1
md5
dc88664f6abd30526f1d1d39d8de1973
sha1
08c9a615ec68a47baa9ed19de86f1d18ca71bab3
sha256
49298b3252506e462cd55afd7af6a8b39460ae0f00685b135995c3856113749b
sha512
81019b7422f718ebbed4cc2a1a13336a14fe89332574089d52a05f00593c77db9046a3f6e6fea240535d9b444f080b27e1b0d1a9f0c720984a721830c4596a97
ripemd-160
f7c6634e535cf6fbf52bf4e08c4e50434ebbf6c0
Diameter
777237842
Circumference
2441764694.5192
Area
4.7445798045997E+17
Volume
2.4584446456826E+26
Surface area
1.8978319218399E+18
Circumference
2441764694.5192
Perimeter
1554475684
Area
151024665759204241
Diagonal
549590148.673
Surface area
906147994555225446
Volume
5.8691042651728E+25
Space diagonal
673107715.9546
Perimeter
1165856763
Area
6.5395598572762E+16
Altitude
336553857.9773
Surface area
6.5395598572762E+16
Volume
6.9168057089909E+24
Height
183196716.22433