21031288 is an even 8-digits composite number following 21031287
and preceding 21031289 . In scientific notation, it is written as 2.1031288 × 10^7.
The sum of its digits is 25. It has a total of 4 prime factors and 8 positive divisors.
There are 10515640 positive integers (up to 21031288) that are relatively prime to 21031288.
21031288 has 8 divisors, whose sum is 39433680
The reverse of 21031288 is 88213012
Previous prime number is 2
Is Prime? no
Number parity even
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty-one million thirty-one thousand two hundred eighty-eight
Scientific notation
2.1031288 × 10^7
Engineering notation
2.1031288 × 10^6
Prime Factorization
2 × 2 × 2 × 2628911
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
5257822
Product of the distinct prime numbers
The prime factorization of 21031288 is 2 × 2 × 2 × 2628911.
Since it has a total of 4 prime factors.
3 , 2 , 10 , 18 , 458 , 936 , 7203 , 240 , 29252 , 37925 , 541358 , 139527 , 6078999 , 4983710 , 82585563 , 55423690 , 571273187 , 535648322 , 5268959298 , 3581811367
n×2
42062576
n×3
63093864
n×4
84125152
n×5
105156440
n÷2
10515644
n÷3
7010429.3333333
n÷3
5257822
n÷5
4206257.6
n2
442315074938944
n3
9.3024557277825E+21
n4
1.9564262551824E+29
n5
4.1146164023503E+36
2 √n
4585.9882250176
3 √n
276.02936745549
4 √n
67.719924874571
5 √n
29.145611667609
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21031287
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21031288 can be divided by 8 positive divisors.
The sum of these divisors (counting 21031288) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000001110100101111000
3
Ternary
1110120111111121
4
Quaternary
1100032211320
5
Quinary
20341000123
6
Senary
2030435024
8
Octal
120164570
10
Decimal
21031288
12
Duodecimal
7062a74
16
Hexadecimal
140e978
20
Vigesimal
6b8i48
36
Base36
cirug
md5
29a401fcf6776845085336869bb61231
sha1
c6f564b97245f3cbf261bf74787185e0ea0570b1
sha256
d805777fdd70d911df6b0da318833d0dfa2e4cb524425794ba1dfa69e990041a
sha512
f0c80ae4643af2d08d45dfd75b3146dedd362f301afc8de67752928725bd2fed48cded7ba7b6942131b647ae56921da6540e49701f0a9854cb5ac72c4f38b539
ripemd-160
f12dc64e07ff0a096fe7e33f5c61cdb4dd7aa99f
Diameter
42062576
Circumference
132143479.75266
Area
1.3895737900002E+15
Volume
3.8966035432994E+22
Surface area
5.5582951600008E+15
Circumference
132143479.75266
Perimeter
84125152
Area
442315074938944
Diagonal
29742732.723775
Surface area
2653890449633664
Volume
9.3024557277825E+21
Space diagonal
36427259.364614
Perimeter
63093864
Area
1.9152804568697E+14
Altitude
18213629.682307
Surface area
1.9152804568697E+14
Volume
1.0963049211338E+21
Height
9914244.2412582