21490723 is an odd 8-digits composite number following 21490722
and preceding 21490724 . In scientific notation, it is written as 2.1490723 × 10^7.
The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors.
There are 21481200 positive integers (up to 21490723) that are relatively prime to 21490723.
21490723 has 4 divisors, whose sum is 21500248
The reverse of 21490723 is 32709412
Previous prime number is 3673
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty-one million four hundred ninety thousand seven hundred twenty-three
Scientific notation
2.1490723 × 10^7
Engineering notation
2.1490723 × 10^6
Prime Factorization
3673 × 5851
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21490723
Product of the distinct prime numbers
The prime factorization of 21490723 is 3673 × 5851.
Since it has a total of 2 prime factors.
9 , 3 , 8 , 18 , 27 , 619 , 4979 , 9251 , 14166 , 34905 , 53628 , 809615 , 7353254 , 3200422 , 78632533 , 89130168 , 880486849 , 183533600 , 2571963238 , 4519582651
n×2
42981446
n×3
64472169
n×4
85962892
n×5
107453615
n÷2
10745361.5
n÷3
7163574.3333333
n÷3
5372680.75
n÷5
4298144.6
n2
461851175062729
n3
9.9255156704976E+21
n4
2.1330650790682E+29
n5
4.5841110755229E+36
2 √n
4635.8087751761
3 √n
278.02488865038
4 √n
68.08677386377
5 √n
29.271852311561
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
-21490722
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 21490723 can be divided by 4 positive divisors.
The sum of these divisors (counting 21490723) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010001111110110000100011
3
Ternary
1111102211201201
4
Quaternary
1101332300203
5
Quinary
21000200343
6
Senary
2044342031
8
Octal
121766043
10
Decimal
21490723
12
Duodecimal
7244917
16
Hexadecimal
147ec23
20
Vigesimal
6e66g3
36
Base36
csmcj
md5
7119f0cd5e3056bc32f78dc6342419dc
sha1
fa9e791e11bf628cb77d58551c1fd6b1e2964990
sha256
17ad6d6619cdf07c1bfc5f4f2ff9e5cbb7e87182cb6c0ef0134b5b69943a6eba
sha512
6f9439ed81a0dd0a05ae16bda5932d2390cadbe01ef617661b5ed82baace2b6d0dd25c8fd7c38fa84a556182bf5eb375aaf4e79cdc8f7c846e70e404c9e644c5
ripemd-160
643c2c0aa82356be530f21c2e16c187bd1f4be40
Diameter
42981446
Circumference
135030194.99427
Area
1.4509482586289E+15
Volume
4.1575902818034E+22
Surface area
5.8037930345155E+15
Circumference
135030194.99427
Perimeter
85962892
Area
461851175062729
Diagonal
30392471.931803
Surface area
2771107050376374
Volume
9.9255156704976E+21
Space diagonal
37223024.127389
Perimeter
64472169
Area
1.9998742518601E+14
Altitude
18611512.063695
Surface area
1.9998742518601E+14
Volume
1.1697332395637E+21
Height
10130823.977268