72804921 is an odd 8-digits composite number following 72804920
and preceding 72804922 . In scientific notation, it is written as 7.2804921 × 10^7.
The sum of its digits is 33. It has a total of 2 prime factors and 4 positive divisors.
There are 41602800 positive integers (up to 72804921) that are relatively prime to 72804921.
72804921 has 4 divisors, whose sum is 76271844
The reverse of 72804921 is 12940827
Previous prime number is 21
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6
Name
seventy-two million eight hundred four thousand nine hundred twenty-one
Scientific notation
7.2804921 × 10^7
Engineering notation
7.2804921 × 10^6
Prime Factorization
21 × 3466901
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
72804921
Product of the distinct prime numbers
The prime factorization of 72804921 is 21 × 3466901.
Since it has a total of 2 prime factors.
8 , 7 , 17 , 81 , 540 , 465 , 5588 , 9061 , 62359 , 75579 , 828728 , 542456 , 2006243 , 3755838 , 58701294 , 40346408 , 491150713 , 870855059 , 7484478628 , 2227157209
n×2
145609842
n×3
218414763
n×4
291219684
n×5
364024605
n÷2
36402460.5
n÷3
24268307
n÷3
18201230.25
n÷5
14560984.2
n2
5300556521816241
n3
3.8590659882687E+23
n4
2.8095899440969E+31
n5
2.0455197392237E+39
2 √n
8532.5799732555
3 √n
417.56130382144
4 √n
92.371965299302
5 √n
37.362174715914
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
-72804920
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 72804921 can be divided by 4 positive divisors.
The sum of these divisors (counting 72804921) is 1, the average is 0.25.
Base
System
Value
2
Binary
100010101101110101000111001
3
Ternary
12001222212120120
4
Quaternary
10111232220321
5
Quinary
122114224141
6
Senary
11120243453
8
Octal
425565071
10
Decimal
72804921
12
Duodecimal
20470589
16
Hexadecimal
456ea39
20
Vigesimal
12f0c61
36
Base36
17cgmx
md5
c0a376ccabc6048f812f24fd3089815f
sha1
618973bb73409b4c8018e1ec830e0c656b0049d8
sha256
0250b76b1450a4be64f0d3a28175b7a167a6bddf299971e0f85de2ab50f7b6e7
sha512
7e3fa0f45fee75b96a0aa6b5e354ad8af8dbfde734ff4b0ca5471ae17d6d906b8082be6bff2c85da2e09479fbe4d73b71880685a68044278f047be69efc5678d
ripemd-160
1341d89ffe2f9d86fd90a808ae719233b759cf64
Diameter
145609842
Circumference
457446809.91757
Area
1.6652189428875E+16
Volume
1.6164817811284E+24
Surface area
6.6608757715501E+16
Circumference
457446809.91757
Perimeter
291219684
Area
5300556521816241
Diagonal
102961706.6857
Surface area
31803339130897446
Volume
3.8590659882687E+23
Space diagonal
126101822.21304
Perimeter
218414763
Area
2.2952083010441E+15
Altitude
63050911.106519
Surface area
2.2952083010441E+15
Volume
4.5479528822519E+22
Height
34320568.895234