21691823 is an odd 8-digits composite number following 21691822
and preceding 21691824 . In scientific notation, it is written as 2.1691823 × 10^7.
The sum of its digits is 32. It has a total of 2 prime factors and 4 positive divisors.
There are 21187320 positive integers (up to 21691823) that are relatively prime to 21691823.
21691823 has 4 divisors, whose sum is 22196328
The reverse of 21691823 is 32819612
Previous prime number is 43
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5
Name
twenty-one million six hundred ninety-one thousand eight hundred twenty-three
Scientific notation
2.1691823 × 10^7
Engineering notation
2.1691823 × 10^6
Prime Factorization
43 × 504461
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21691823
Product of the distinct prime numbers
The prime factorization of 21691823 is 43 × 504461.
Since it has a total of 2 prime factors.
1 , 9 , 94 , 1 , 846 , 957 , 1732 , 8284 , 86723 , 22636 , 51140 , 548912 , 6234792 , 2954664 , 29003332 , 35204484 , 760266258 , 356812608 , 1394061614 , 8933437158
n×2
43383646
n×3
65075469
n×4
86767292
n×5
108459115
n÷2
10845911.5
n÷3
7230607.6666667
n÷3
5422955.75
n÷5
4338364.6
n2
470535185063329
n3
1.0206765949666E+22
n4
2.2140336038258E+29
n5
4.8026425050242E+36
2 √n
4657.4481210208
3 √n
278.88940602846
4 √n
68.245498906674
5 √n
29.326430828176
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
-21691822
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 21691823 can be divided by 4 positive divisors.
The sum of these divisors (counting 21691823) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010010101111110110101111
3
Ternary
1111211001120212
4
Quaternary
1102233312233
5
Quinary
21023114243
6
Senary
2052533035
8
Octal
122576657
10
Decimal
21691823
12
Duodecimal
732117b
16
Hexadecimal
14afdaf
20
Vigesimal
6fb9b3
36
Base36
cwxin
md5
c6e7087d2344dd4356df5a5d12b5759d
sha1
97a44282045b54a7298abcac6b7a96b6e3d19c9f
sha256
6c33d757f3f439642dcad0b1efc546e3db52560022ffb74de91861f309933140
sha512
9d58aa1d4ece1adaf579a5abe2aefefbc2cd911642e33f9297175af843ef584dca12769dc73de3a702991c234826f21a23a7c3bea2272eb7259c4e68a5733435
ripemd-160
372aedd90082ce80986034be97532c63d84218b4
Diameter
43383646
Circumference
136293743.55954
Area
1.4782298806505E+15
Volume
4.2754001232508E+22
Surface area
5.9129195226019E+15
Circumference
136293743.55954
Perimeter
86767292
Area
470535185063329
Diagonal
30676870.279197
Surface area
2823211110379974
Volume
1.0206765949666E+22
Space diagonal
37571339.544791
Perimeter
65075469
Area
2.0374771181963E+14
Altitude
18785669.772396
Surface area
2.0374771181963E+14
Volume
1.2028789028321E+21
Height
10225623.426399