21105789 is an odd 8-digits composite number following 21105788
and preceding 21105790 . In scientific notation, it is written as 2.1105789 × 10^7.
The sum of its digits is 33. It has a total of 5 prime factors and 32 positive divisors.
There are 11987712 positive integers (up to 21105789) that are relatively prime to 21105789.
21105789 has 32 divisors, whose sum is 32762880
The reverse of 21105789 is 98750112
Previous prime number is 23
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6
Name
twenty-one million one hundred five thousand seven hundred eighty-nine
Scientific notation
2.1105789 × 10^7
Engineering notation
2.1105789 × 10^6
Prime Factorization
3 × 17 × 19 × 23 × 947
Composite number
ω
Distinct Factors
5
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
21105789
Product of the distinct prime numbers
The prime factorization of 21105789 is 3 × 17 × 19 × 23 × 947.
Since it has a total of 5 prime factors.
9 , 7 , 94 , 24 , 845 , 283 , 6721 , 7211 , 15346 , 86360 , 791018 , 617892 , 7940925 , 1550457 , 11615779 , 65124044 , 394754291 , 651131009 , 2900585466 , 9570840744
n×2
42211578
n×3
63317367
n×4
84423156
n×5
105528945
n÷2
10552894.5
n÷3
7035263
n÷3
5276447.25
n÷5
4221157.8
n2
445454329312521
n3
9.4016650836066E+21
n4
1.9842955950327E+29
n5
4.1880124142389E+36
2 √n
4594.1037210755
3 √n
276.35491779962
4 √n
67.779817948085
5 √n
29.166231488831
1 , 3 , 17 , 19 , 23 , 51 , 57 , 69 , 323 , 391 , 437 , 947 , 969 , 1173 , 1311 , 2841 , 7429 , 16099 , 17993 , 21781 , 22287 , 48297 , 53979 , 65343 , 305881 , 370277 , 413839 , 917643 , 1110831 , 1241517 , 7035263 , 21105789
32 divisors
τ
Total Divisors
32
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21105788
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.03125
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
32
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21105789 can be divided by 32 positive divisors.
The sum of these divisors (counting 21105789) is 1, the average is 0.03125.
Base
System
Value
2
Binary
1010000100000110001111101
3
Ternary
1110201021200220
4
Quaternary
1100200301331
5
Quinary
20400341124
6
Senary
2032211553
8
Octal
120406175
10
Decimal
21105789
12
Duodecimal
7099bb9
16
Hexadecimal
1420c7d
20
Vigesimal
6bi499
36
Base36
ckdbx
md5
ed549c1cfd5af76ec910088f9dafb3f7
sha1
18abc896b1531051550bc0dbd3d989c231128407
sha256
c2d1960f63e850b1a60f005954809c39a6f57ee45f66b95013af0c00ef75e114
sha512
0e0153d7de5a11465c136d5db5e30af601d5d986c8b61c1758f357e68485f39e7e4f2ddd207305ae712aa7b2926c13a10ddd1cd0d9f87f1384b6207ffd5b40a0
ripemd-160
cc76b748174a28510d0d8516ef36e06b1a785a0a
Diameter
42211578
Circumference
132611583.34123
Area
1.399436048478E+15
Volume
3.9381602610893E+22
Surface area
5.5977441939119E+15
Circumference
132611583.34123
Perimeter
84423156
Area
445454329312521
Diagonal
29848093.048385
Surface area
2672725975875126
Volume
9.4016650836066E+21
Space diagonal
36556298.881828
Perimeter
63317367
Area
1.928873827052E+14
Altitude
18278149.440914
Surface area
1.928873827052E+14
Volume
1.1079968558438E+21
Height
9949364.3494616