391241921 is an odd 9-digits composite number following 391241920
and preceding 391241922 . In scientific notation, it is written as 3.91241921 × 10^8.
The sum of its digits is 32. It has a total of 3 prime factors and 8 positive divisors.
There are 329649264 positive integers (up to 391241921) that are relatively prime to 391241921.
391241921 has 8 divisors, whose sum is 447311424
The reverse of 391241921 is 129142193
Previous prime number is 2891
Is Prime? no Number parity odd Number length 9 Sum of Digits 32 Digital Root 5
Name
three hundred ninety-one million two hundred forty-one thousand nine hundred twenty-one
Scientific notation
3.91241921 × 10^8
Engineering notation
3.91241921 × 10^6
Prime Factorization
7 × 2891 × 19333
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
3 Total number of prime factors
rad Radical
391241921 Product of the distinct prime numbers
The prime factorization of 391241921 is 7 × 2891 × 19333.
Since it has a total of 3 prime factors.
4 , 3 , 39 , 91 , 768 , 254 , 1805 , 9553 , 64992 , 37124 , 684694 , 700585 , 9180985 , 9287223 , 8875174 , 70902297 , 121592596 , 369250285 , 9975673923 , 658260429
n×2
782483842
n×3
1173725763
n×4
1564967684
n×5
1956209605
n÷2
195620960.5
n÷3
130413973.66667
n÷3
97810480.25
n÷5
78248384.2
n2
153070240747770241
n3
5.988749503809E+25
n4
2.343049860258E+34
n5
9.1669932832613E+42
2 √n19779.83622278
3 √n731.38906157017
4 √n140.64080568164
5 √n52.298481178275
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
-391241920 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 391241921 can be divided by 8 positive divisors.
The sum of these divisors (counting 391241921) is 1, the average is 0.125.
Base
System
Value
2
Binary
10111010100011110000011000001
3
Ternary
1000021012011000112
4
Quaternary
113110132003001
5
Quinary
1300124220141
6
Senary
102453401105
8
Octal
2724360301
10
Decimal
391241921
12
Duodecimal
ab039195
16
Hexadecimal
1751e0c1
20
Vigesimal
62554g1
36
Base36
6gxo75
md5
72dc8d92168133e8d9c839f66405281b
sha1
54e4ddb8e27189e17e3690a45085064ce5637926
sha256
aec6cb799730f3a5814238b09a00bc48d292c6e5f9dcf18b244fa5b218fc6648
sha512
bc528b2872f803bf7a11123defc695404d622ea8d13081a41fc832e231201b35ab7fff11c0ef99bd2f3b740cfbac050da602a5389a70bc068c60b0a2e8c10dd5
ripemd-160
a70f11e53ac5a884895a45aa057a1f418031e375
Diameter
782483842
Circumference
2458245489.5799
Area
4.8088434381642E+17
Volume
2.5085615260475E+26
Surface area
1.9235373752657E+18
Circumference
2458245489.5799
Perimeter
1564967684
Area
153070240747770241
Diagonal
553299630.8471
Surface area
918421444486621446
Volume
5.988749503809E+25
Space diagonal
677650885.22285
Perimeter
1173725763
Area
6.6281358525484E+16
Altitude
338825442.61142
Surface area
6.6281358525484E+16
Volume
7.0578089749515E+24
Height
184433210.28237