21861839 is an odd 8-digits prime number following 21861838
and preceding 21861840 . In scientific notation, it is written as 2.1861839 × 10^7.
The sum of its digits is 38. It has a total of 1 prime factors and 2 positive divisors.
There are 21861838 positive integers (up to 21861839) that are relatively prime to 21861839.
21861839 has 2 divisors, whose sum is 21861840
The reverse of 21861839 is 93816812
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 eight hundred sixty-one thousand eight hundred thirty-nine
Scientific notation
2.1861839 × 10^7
Engineering notation
2.1861839 × 10^6
Prime Factorization
21861839
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
21861839 Product of the distinct prime numbers
The prime factorization of 21861839 is 21861839.
Since it has a total of 1 prime factors.
8 , 7 , 17 , 29 , 748 , 233 , 8353 , 5491 , 26275 , 16312 , 573024 , 790249 , 897599 , 1431452 , 67571621 , 1158557 , 325610890 , 715463251 , 7532300487 , 2665885962
n×2
43723678
n×3
65585517
n×4
87447356
n×5
109309195
n÷2
10930919.5
n÷3
7287279.6666667
n÷3
5465459.75
n÷5
4372367.8
n2
477940004461921
n3
1.0448647429206E+22
n4
2.2842664786506E+29
n5
4.9938265989357E+36
2 √n4675.6645516974
3 √n279.61613640094
4 √n68.378831166505
5 √n29.372258271983
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
21861840 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
10930920 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
4675.6646586341 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999085164 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21861839 can be divided by 2 positive divisors.
The sum of these divisors (counting 21861839) is 21861840, the average is 10930920.
Base
System
Value
2
Binary
1010011011001010111001111
3
Ternary
1112010200210202
4
Quaternary
1103121113033
5
Quinary
21044034324
6
Senary
2100324115
8
Octal
123312717
10
Decimal
21861839
12
Duodecimal
73a363b
16
Hexadecimal
14d95cf
20
Vigesimal
6gcebj
36
Base36
d0kpb
md5
bc58ff5117bdd1f31c338f62180df7c6
sha1
e980136bc4578e6be6f6ef202df46951f142c0b7
sha256
695406b7f10dbeea051f1d76fa92cad4f12b740b35da0d0c54f75f9625e5e6b2
sha512
fb84e20d2c2c8e93598ed831071eae1a55b8a53ed7a482abf45e0e9269942367c7a54966787714ef3e00ba618ec819e252426513bfa2972e7e6cae9ebf1830bb
ripemd-160
85469b62d8ece9d3a7aad27429fcb2e6a27381d1
Diameter
43723678
Circumference
137361985.59273
Area
1.5014928068742E+15
Volume
4.3767192004724E+22
Surface area
6.005971227497E+15
Circumference
137361985.59273
Perimeter
87447356
Area
477940004461921
Diagonal
30917309.212217
Surface area
2867640026771526
Volume
1.0448647429206E+22
Space diagonal
37865815.894891
Perimeter
65585517
Area
2.0695409267444E+14
Altitude
18932907.947445
Surface area
2.0695409267444E+14
Volume
1.2313849085698E+21
Height
10305769.737406