21252913 is an odd 8-digits composite number following 21252912
and preceding 21252914 . In scientific notation, it is written as 2.1252913 × 10^7.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 19189680 positive integers (up to 21252913) that are relatively prime to 21252913.
21252913 has 4 divisors, whose sum is 21267520
The reverse of 21252913 is 31925212
Previous prime number is 1639
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty-one million two hundred fifty-two thousand nine hundred thirteen
Scientific notation
2.1252913 × 10^7
Engineering notation
2.1252913 × 10^6
Prime Factorization
1639 × 12967
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21252913
Product of the distinct prime numbers
The prime factorization of 21252913 is 1639 × 12967.
Since it has a total of 2 prime factors.
10 , 1 , 5 , 78 , 158 , 925 , 8675 , 3142 , 85741 , 56488 , 106700 , 931824 , 9224563 , 4945763 , 37894901 , 64333171 , 342670699 , 443878268 , 1495540081 , 9633969987
n×2
42505826
n×3
63758739
n×4
85011652
n×5
106264565
n÷2
10626456.5
n÷3
7084304.3333333
n÷3
5313228.25
n÷5
4250582.6
n2
451686310985569
n3
9.5996498706672E+21
n4
2.0402052353175E+29
n5
4.3360304368348E+36
2 √n
4610.0881770309
3 √n
276.99556874925
4 √n
67.897630128237
5 √n
29.206780909961
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
-21252912
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 21252913 can be divided by 4 positive divisors.
The sum of these divisors (counting 21252913) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010001000100101100110001
3
Ternary
1110222202111221
4
Quaternary
1101010230301
5
Quinary
20420043123
6
Senary
2035305041
8
Octal
121045461
10
Decimal
21252913
12
Duodecimal
714b181
16
Hexadecimal
1444b31
20
Vigesimal
6cgc5d
36
Base36
cniup
md5
47b9ca42b128002912f1556ee5a7cf95
sha1
8c2760298d1eeaa47dc626b62498a3276874f057
sha256
c65485ed2d4b5a520a11bd0aba88be968bf7f87a143968ca3ac8c4cd2f89e4fd
sha512
f4f85837bf576439c0500bd81ee73ac47867267340137c18ce3a25da1b4699414199cd1a141533d2265587c525936dada3adfa4c0652b12e4a2a8fb605401e43
ripemd-160
67c5b1b94bfe5338e7ef95790518a99c192ace49
Diameter
42505826
Circumference
133535990.69637
Area
1.4190143963193E+15
Volume
4.021091934763E+22
Surface area
5.6760575852774E+15
Circumference
133535990.69637
Perimeter
85011652
Area
451686310985569
Diagonal
30056157.804535
Surface area
2710117865913414
Volume
9.5996498706672E+21
Space diagonal
36811125.124841
Perimeter
63758739
Area
1.9558590992759E+14
Altitude
18405562.562421
Surface area
1.9558590992759E+14
Volume
1.1313295867609E+21
Height
10018719.268178