78811221 is an odd 8-digits composite number following 78811220
and preceding 78811222 . In scientific notation, it is written as 7.8811221 × 10^7.
The sum of its digits is 30. It has a total of 4 prime factors and 16 positive divisors.
There are 48428928 positive integers (up to 78811221) that are relatively prime to 78811221.
78811221 has 16 divisors, whose sum is 113604800
The reverse of 78811221 is 12211887
Previous prime number is 37
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
seventy-eight million eight hundred eleven thousand two hundred twenty-one
Scientific notation
7.8811221 × 10^7
Engineering notation
7.8811221 × 10^6
Prime Factorization
3 × 19 × 37 × 37369
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
78811221
Product of the distinct prime numbers
The prime factorization of 78811221 is 3 × 19 × 37 × 37369.
Since it has a total of 4 prime factors.
7 , 7 , 96 , 48 , 957 , 577 , 1508 , 7536 , 87642 , 233 , 473733 , 909885 , 3271691 , 3821211 , 45878872 , 31442170 , 634154382 , 188002643 , 298882760 , 4160370928
n×2
157622442
n×3
236433663
n×4
315244884
n×5
394056105
n÷2
39405610.5
n÷3
26270407
n÷3
19702805.25
n÷5
15762244.2
n2
6211208555510841
n3
4.8951293014546E+23
n4
3.8579111720051E+31
n5
3.0404668997526E+39
2 √n
8877.5684170836
3 √n
428.74198927084
4 √n
94.220849163461
5 √n
37.959248964722
1 , 3 , 19 , 37 , 57 , 111 , 703 , 2109 , 37369 , 112107 , 710011 , 1382653 , 2130033 , 4147959 , 26270407 , 78811221
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-78811220
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 78811221 can be divided by 16 positive divisors.
The sum of these divisors (counting 78811221) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100101100101001000001010101
3
Ternary
12111022000200010
4
Quaternary
10230221001111
5
Quinary
130133424341
6
Senary
11453110433
8
Octal
454510125
10
Decimal
78811221
12
Duodecimal
22488419
16
Hexadecimal
4b29055
20
Vigesimal
14cb811
36
Base36
1ax74l
md5
aecc740c3664dfa5a9bb4ad8d5395715
sha1
d8367dcbe8b9b2344436314e4b683770082e7d24
sha256
88bd8d82d1e63328d5b110f8da21f3c354ef875e9287bb45b29ea6c221ec4742
sha512
af4b43e867aee761b3fdb6923583dfb2370164e1e2dc1fe4062ad435a7efc5cf282dde443faef731e49a29ba1c268bd3c08a7ac5318f7af4315724840323aae6
ripemd-160
44f4a9173be89b59b122848bcce5b76d92e1b55b
Diameter
157622442
Circumference
495185505.82808
Area
1.9513087167907E+16
Volume
2.0504669669096E+24
Surface area
7.8052348671628E+16
Circumference
495185505.82808
Perimeter
315244884
Area
6211208555510841
Diagonal
111455897.60538
Surface area
37267251333065046
Volume
4.8951293014546E+23
Space diagonal
136505038.97854
Perimeter
236433663
Area
2.6895321986378E+15
Altitude
68252519.48927
Surface area
2.6895321986378E+15
Volume
5.7689652064058E+22
Height
37151965.868461