21493847 is an odd 8-digits prime number following 21493846
and preceding 21493848 . In scientific notation, it is written as 2.1493847 × 10^7.
The sum of its digits is 38. It has a total of 1 prime factors and 2 positive divisors.
There are 21493846 positive integers (up to 21493847) that are relatively prime to 21493847.
21493847 has 2 divisors, whose sum is 21493848
The reverse of 21493847 is 74839412
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 38 Digital Root 2
Name
twenty-one million four hundred ninety-three thousand eight hundred forty-seven
Scientific notation
2.1493847 × 10^7
Engineering notation
2.1493847 × 10^6
Prime Factorization
21493847
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
21493847 Product of the distinct prime numbers
The prime factorization of 21493847 is 21493847.
Since it has a total of 1 prime factors.
2 , 1 , 96 , 42 , 70 , 173 , 9140 , 8100 , 13732 , 48236 , 988432 , 409299 , 649971 , 1861888 , 44195976 , 72087694 , 732658058 , 913609002 , 2519481573 , 6051775118
n×2
42987694
n×3
64481541
n×4
85975388
n×5
107469235
n÷2
10746923.5
n÷3
7164615.6666667
n÷3
5373461.75
n÷5
4298769.4
n2
461985458859409
n3
9.9298447689489E+21
n4
2.1343056419754E+29
n5
4.5874438919856E+36
2 √n4636.1457052168
3 √n278.03835969817
4 √n68.089248088202
5 √n29.27270328293
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
21493848 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
10746924 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
4636.145813065 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999069501 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21493847 can be divided by 2 positive divisors.
The sum of these divisors (counting 21493847) is 21493848, the average is 10746924.
Base
System
Value
2
Binary
1010001111111100001010111
3
Ternary
1111110000000102
4
Quaternary
1101333201113
5
Quinary
21000300342
6
Senary
2044404315
8
Octal
121774127
10
Decimal
21493847
12
Duodecimal
724669b
16
Hexadecimal
147f857
20
Vigesimal
6e6ec7
36
Base36
csorb
md5
0aad8ad2059b4d096c941cd79b57ade7
sha1
0f66ccabdd16ab494cb5908c52df357f9c8e920a
sha256
28346c8a9b9ccc4145da45d70c6121830815a8e55ac9a896c04a348df7796a33
sha512
321dffc039d0396cf95f4f68c74a2667ee03e9658f652344c57e7313a67a398f69f101ca1b3b1d595f0931e5aee3d57f819742d75838721b1997bd091b530812
ripemd-160
4f13af34b85eee7647a8f70d34df731ded523fe4
Diameter
42987694
Circumference
135049823.66517
Area
1.451370123618E+15
Volume
4.1594036503223E+22
Surface area
5.8054804944721E+15
Circumference
135049823.66517
Perimeter
85975388
Area
461985458859409
Diagonal
30396889.934972
Surface area
2771912753156454
Volume
9.9298447689489E+21
Space diagonal
37228435.054112
Perimeter
64481541
Area
2.0004557177563E+14
Altitude
18614217.527056
Surface area
2.0004557177563E+14
Volume
1.1702434287089E+21
Height
10132296.644991