21493857 is an odd 8-digits composite number following 21493856
and preceding 21493858 . In scientific notation, it is written as 2.1493857 × 10^7.
The sum of its digits is 39. It has a total of 3 prime factors and 8 positive divisors.
There are 11165520 positive integers (up to 21493857) that are relatively prime to 21493857.
21493857 has 8 divisors, whose sum is 24564672
The reverse of 21493857 is 75839412
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3
Name
twenty-one million four hundred ninety-three thousand eight hundred fifty-seven
Scientific notation
2.1493857 × 10^7
Engineering notation
2.1493857 × 10^6
Prime Factorization
21 × 11 × 93047
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21493857
Product of the distinct prime numbers
The prime factorization of 21493857 is 21 × 11 × 93047.
Since it has a total of 3 prime factors.
6 , 4 , 4 , 42 , 84 , 986 , 7980 , 8566 , 23401 , 93658 , 328122 , 560497 , 5863924 , 3565673 , 61779861 , 24575498 , 80436724 , 600261026 , 5848046043 , 4875677037
n×2
42987714
n×3
64481571
n×4
85975428
n×5
107469285
n÷2
10746928.5
n÷3
7164619
n÷3
5373464.25
n÷5
4298771.4
n2
461985888736449
n3
9.9298586285191E+21
n4
2.1343096139161E+29
n5
4.5874545635237E+36
2 √n
4636.1467836987
3 √n
278.03840281723
4 √n
68.089256007822
5 √n
29.272706006751
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
-21493856
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 21493857 can be divided by 8 positive divisors.
The sum of these divisors (counting 21493857) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001111111100001100001
3
Ternary
1111110000000210
4
Quaternary
1101333201201
5
Quinary
21000300412
6
Senary
2044404333
8
Octal
121774141
10
Decimal
21493857
12
Duodecimal
72466a9
16
Hexadecimal
147f861
20
Vigesimal
6e6ech
36
Base36
csorl
md5
0629e7528f82b8222d6cf0a7aaf4eb26
sha1
801bac771c480275cac80158da8894cdb6cc91ec
sha256
ad67f8e428abf863de733aec9607a0dadf0516625b0336283cbd70239b1c300e
sha512
b086d6de3a05a9c0f3f83a7b4321d7aa1c7f9807d52eee32d2fc47d6838aae58506309d47ad9fce559f82330acb0887c2cd1a8a3347f2d6024062f91d6067855
ripemd-160
9e7f3aab6d19553ff5ddc6882eb31e218e28efa6
Diameter
42987714
Circumference
135049886.49702
Area
1.4513714741166E+15
Volume
4.1594094558055E+22
Surface area
5.8054858964663E+15
Circumference
135049886.49702
Perimeter
85975428
Area
461985888736449
Diagonal
30396904.077108
Surface area
2771915332418694
Volume
9.9298586285191E+21
Space diagonal
37228452.37462
Perimeter
64481571
Area
2.0004575791785E+14
Altitude
18614226.18731
Surface area
2.0004575791785E+14
Volume
1.1702450620749E+21
Height
10132301.359036