68742721 is an odd 8-digits composite number following 68742720
and preceding 68742722 . In scientific notation, it is written as 6.8742721 × 10^7.
The sum of its digits is 37. It has a total of 3 prime factors and 8 positive divisors.
There are 67897200 positive integers (up to 68742721) that are relatively prime to 68742721.
68742721 has 8 divisors, whose sum is 69591744
The reverse of 68742721 is 12724786
Previous prime number is 823
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
sixty-eight million seven hundred forty-two thousand seven hundred twenty-one
Scientific notation
6.8742721 × 10^7
Engineering notation
6.8742721 × 10^6
Prime Factorization
101 × 823 × 827
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
68742721
Product of the distinct prime numbers
The prime factorization of 68742721 is 101 × 823 × 827.
Since it has a total of 3 prime factors.
1 , 1 , 68 , 69 , 533 , 486 , 6776 , 8055 , 53381 , 15058 , 828603 , 901188 , 9734991 , 5189528 , 71622477 , 6004834 , 886434577 , 889241137 , 8706506412 , 2696970458
n×2
137485442
n×3
206228163
n×4
274970884
n×5
343713605
n÷2
34371360.5
n÷3
22914240.333333
n÷3
17185680.25
n÷5
13748544.2
n2
4725561690483841
n3
3.2484796885722E+23
n4
2.2330933290568E+31
n5
1.5350891168632E+39
2 √n
8291.1230240541
3 √n
409.64617699725
4 √n
91.055604023333
5 √n
36.935615768009
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
-68742720
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 68742721 can be divided by 8 positive divisors.
The sum of these divisors (counting 68742721) is 1, the average is 0.125.
Base
System
Value
2
Binary
100000110001110111001000001
3
Ternary
11210100111021201
4
Quaternary
10012032321001
5
Quinary
120044231341
6
Senary
10453221201
8
Octal
406167101
10
Decimal
68742721
12
Duodecimal
1b031801
16
Hexadecimal
418ee41
20
Vigesimal
119cgg1
36
Base36
14xe81
md5
5c3e9857f0a94f750e8314074d39accd
sha1
fe2f2d466ea52e243538819ea505fc5dcdc0bee8
sha256
df5ad1e528cdfd49afffab83d210ab398859f7610d6e1efe038bc37dc2a9109e
sha512
f496d0f98bc87d8e42b97932aaa13b56198764e2c853ebc817f9e5929e5028e34f927d0c1faf51c8ae6063dad27b86bd83d09215bbf697828e0d4842e1b36761
ripemd-160
8ec418e55930c1b84db52318dd83e2e673c31e03
Diameter
137485442
Circumference
431923254.56275
Area
1.4845789890909E+16
Volume
1.3607199899939E+24
Surface area
5.9383159563638E+16
Circumference
431923254.56275
Perimeter
274970884
Area
4725561690483841
Diagonal
97216888.35263
Surface area
28353370142903046
Volume
3.2484796885722E+23
Space diagonal
119065885.42253
Perimeter
206228163
Area
2.0462282355548E+15
Altitude
59532942.711266
Surface area
2.0462282355548E+15
Volume
3.8283700272269E+22
Height
32405629.450877